{"id":402,"date":"2013-10-28T14:34:48","date_gmt":"2013-10-28T14:34:48","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/?p=402"},"modified":"2013-10-28T14:36:22","modified_gmt":"2013-10-28T14:36:22","slug":"scratch-calculations-2","status":"publish","type":"post","link":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/","title":{"rendered":"Scratch &#8211; Calculations"},"content":{"rendered":"<p>Calculations are performed using numeric operators (+-\/*)<\/p>\n<p><a href=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/3-Calculations.ppt\">Calculation Slides<\/a><\/p>\n<p><!--more--><\/p>\n<div data-carousel-extra='{&quot;blog_id&quot;:12638,&quot;permalink&quot;:&quot;https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/&quot;}' id='gallery-1' class='gallery galleryid-402 gallery-columns-3 gallery-size-thumbnail'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=4b0fe76b80fdbe7dff3167c87fc1ea54f7cc0b09454dc6e072d9d7ea912c3a3d\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=4b0fe76b80fdbe7dff3167c87fc1ea54f7cc0b09454dc6e072d9d7ea912c3a3d 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=0b0565ab29bc99c33e3041a9bc460a5025342616af7b5fdb21c1cbd2fd802a9e 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"403\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide01-5\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide01\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=0b0565ab29bc99c33e3041a9bc460a5025342616af7b5fdb21c1cbd2fd802a9e\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide011.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=e17ae635b9382b42cb4de15f5c8517332d2409802d39c2bbedd6f6212b8d2820\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=e17ae635b9382b42cb4de15f5c8517332d2409802d39c2bbedd6f6212b8d2820 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=3a365711ab8c4e67e868921417590733eb4338b4fa68d7eb3fe756d40a1b84b6 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"404\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide02-5\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide02\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=3a365711ab8c4e67e868921417590733eb4338b4fa68d7eb3fe756d40a1b84b6\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide021.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=817d95a5d69b7339f44032db453cdbd7ad0864a58fc3d763dd1276f4eb662616\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=817d95a5d69b7339f44032db453cdbd7ad0864a58fc3d763dd1276f4eb662616 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=53b940dfb488b752c57f0462eee7afb3f5a66c405e5b9be6c5c41fdd8ab832aa 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"405\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide03-5\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide03\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=53b940dfb488b752c57f0462eee7afb3f5a66c405e5b9be6c5c41fdd8ab832aa\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide031.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=bab9e7f127572940124ba9eb05d53bc34979ff4fc7ff9b383177dde6598325f7\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=bab9e7f127572940124ba9eb05d53bc34979ff4fc7ff9b383177dde6598325f7 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=d07280f03c5b6b783ca1595b546102d2aaca037cf5bfac7637cd7c848afc644a 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"406\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide04-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide04\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=d07280f03c5b6b783ca1595b546102d2aaca037cf5bfac7637cd7c848afc644a\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide041.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=7fec036e8e6b4a1bf2959a1156cff362997d91ea1cf6e4505479bbbbd0e207a5\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=7fec036e8e6b4a1bf2959a1156cff362997d91ea1cf6e4505479bbbbd0e207a5 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=90853880414adee1f51906bdfff1f30e233d79952f9ce189d5ecc551f093504d 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"407\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide05-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide05\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=90853880414adee1f51906bdfff1f30e233d79952f9ce189d5ecc551f093504d\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide051.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=7f882d2db737e005679adb12296d51640b33638bef51aa76d0cd07f5ffd7ca97\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=7f882d2db737e005679adb12296d51640b33638bef51aa76d0cd07f5ffd7ca97 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=c2f028707363759ffc8646cdca5e29378ea0b3892794e7698bba6909402beac9 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"408\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide06-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide06\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=c2f028707363759ffc8646cdca5e29378ea0b3892794e7698bba6909402beac9\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide061.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=3a2d5185dd5784b004b4bd7356d750095294a6af8e36b90baff752b44b09b381\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=3a2d5185dd5784b004b4bd7356d750095294a6af8e36b90baff752b44b09b381 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=91ae639a6faefe43cf4f59d5a6d1d79156a03c716ac3cad280e47488aab157a9 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"409\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide07-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide07\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=91ae639a6faefe43cf4f59d5a6d1d79156a03c716ac3cad280e47488aab157a9\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide071.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=4f5d9775fd11f57ae451e0207105f4822e31c829956df88521f8a613fd8f9064\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=4f5d9775fd11f57ae451e0207105f4822e31c829956df88521f8a613fd8f9064 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=182b7deda4fb5328a1b251e5684e4f9c2d0ed171c25db9e7a4cb9a0806c5b8a9 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"410\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide08-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide08\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=182b7deda4fb5328a1b251e5684e4f9c2d0ed171c25db9e7a4cb9a0806c5b8a9\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide081.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=f3b823a8223a62c9f2b227aa521f8e85154d1106b6e1314edc0c52dd4a919bb1\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=f3b823a8223a62c9f2b227aa521f8e85154d1106b6e1314edc0c52dd4a919bb1 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=7ebc9d372a12cacd1aa8658f5616a9848decdf0c55483c7e2bcce24acf2f821d 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"411\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide09-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide09\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=7ebc9d372a12cacd1aa8658f5616a9848decdf0c55483c7e2bcce24acf2f821d\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide091.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=712066a3a860769bb3837cd1abc1581678e195c8ec238b4733df6ee2e3150bce\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=712066a3a860769bb3837cd1abc1581678e195c8ec238b4733df6ee2e3150bce 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=75d6b675a1025ef6851f952df93018ac2a144a3f04395d2f4cbc6b98f95ae467 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"412\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide10-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide10\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=75d6b675a1025ef6851f952df93018ac2a144a3f04395d2f4cbc6b98f95ae467\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide101.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=eb2520d32d14ea247cc1924dbde8db9b6e43d80fdec493945eb30d9dae22668f\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=eb2520d32d14ea247cc1924dbde8db9b6e43d80fdec493945eb30d9dae22668f 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=20b8165ef0a999652ebbe94945815d4d717c4cbd0e445fd9cc45f630c30be56e 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"413\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide11-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide11\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=20b8165ef0a999652ebbe94945815d4d717c4cbd0e445fd9cc45f630c30be56e\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide111.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=d484a952e7eadd63276f84c08def9a2af0771c4aa77d29c8ef3957f44a84de7a\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=d484a952e7eadd63276f84c08def9a2af0771c4aa77d29c8ef3957f44a84de7a 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=dbe25b864239506d4585108862b8f32c932bfb51e651d80c96de5fbdc31d575b 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"414\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide12-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide12\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=dbe25b864239506d4585108862b8f32c932bfb51e651d80c96de5fbdc31d575b\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide121.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=d77a1bc052204d8c6b2257155babd186ef42a6f7d8f4bbf7722deb2b438972b5\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=d77a1bc052204d8c6b2257155babd186ef42a6f7d8f4bbf7722deb2b438972b5 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=60cd2b1c8e3bc56e058ce8d5821f7a76243ec62ab027bfcdcb77f70eb2af4794 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"415\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide13-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide13\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=60cd2b1c8e3bc56e058ce8d5821f7a76243ec62ab027bfcdcb77f70eb2af4794\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide131.png\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141.png'><img decoding=\"async\" width=\"150\" height=\"112\" src=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=250066558ed51d0a7b71286ca6684cc21b514777841b34c68b150263ebe8bfcc\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" srcset=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141-150x112.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=250066558ed51d0a7b71286ca6684cc21b514777841b34c68b150263ebe8bfcc 150w, https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=2d9dea4c1d17ddb5a4199cfb868bd310fbb61ca58a3dd666c61c59797f19b56d 300w, https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141.png 800w\" sizes=\"(max-width: 150px) 100vw, 150px\" data-attachment-id=\"416\" data-permalink=\"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/2013\/10\/28\/scratch-calculations-2\/slide14-6\/\" data-orig-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141.png\" data-orig-size=\"800,600\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Slide14\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/glow-prod-nl.s3.eu-west-1.amazonaws.com\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141-300x225.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEKf%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaCWV1LXdlc3QtMSJHMEUCIQDlj4HSIos0FEycOMbRMZSpw%2Fr6uuaG8fWORvmMl5TyyAIgAn%2FZZuDuceeF%2F6xH8ms3Lut51auKifNNdq%2BYYqv0HZIquAUIcBAFGgwyNzM1NzAxOTU0MzMiDF40U01azlWlRQH0giqVBa0JDY1LFeAk2KwT3AmlfAo4g6IpWdKrf4VtKhXsOS9uC1eAmG0UCWr93uxCclCc58UOj6VEekQieS4IZMzuYqpcRrxJ8xRjzkKltVcAtwQCVqiHwRuwsBCW6TOHd1mqI6zH8AdZomyyrgf94E31pJSeIiTyE80bYxJIX9XqQOdVypG42zk3JfxgYgGsi6wQQdrk7JOry7dWoQunDDBuPIJFGew%2FaqDY9zabuRsaa47WD7gZd%2BKg%2FpG5IN4n85aVjDF6L5oqYP5Zf0lXoy5b%2FijY8qfSyIscOLwvjR2Krtbi%2BTs9LBcxkv0DhTgyCojq3e2L7TEYWnjyY%2FvGcPYAnjgol4RKVbUdH0vn6m%2FoO68nEy2kKQMXtqRKyHAMwsiYnPZfJYYXXvR2wGSZ8dXepDdKPSAkySf9G1dB%2F2BnwBqiuEi4EwZ4RS%2FxATCaxEWWWXMeB9FuJ8NEVrl0woe9e%2FOcDuEy3XOH8Ul%2Fl%2F%2FqLCc5OHWp7mDxBWbu4QXM2Nn0x9scNUuZZnZXE7xCx4gOx66pAosdJP8PCz%2BVfwKYV9YD1CgI8CoByQ6qNJbytgZ6txAQ%2BiNk36VALhZMBH2%2FblWWeqZFjKdJPyi4LMUd8IgKEZthhQlqsT3Tt4%2BNC9y3K%2BkjD%2FmGACKH1GHUoLtq%2Bbs%2BVHKNmIthtHEI05dDlyMyn6ioD7hB6dY21XU3M5e3ygPeKdWJi723ZEWWuBlA7kf7U8vPkEOpBFNnCa92HQlGuBN%2Ft4ZiPLVj1jHfJO89tgPeVqLDXUiK2gieOf2QmIFzGpPXgKq%2BRVmL0oxiL1WV2TNq0fpRYMt9Q%2F3qZWnLIvo9fGOcjg7x9cZqRQlkD%2F9HveP8RHOOPbJcknLoXzglE5%2FSFkYw28jN1AY6sQEiXZkbMMVvH6Uomji5m4kDFxiE7ChN07yV%2BuhykjbXb4t6VN8OH4gnOM8S%2FvwAAwkhRKHz8OEZCTaG5uFi4mDBKGcWmMA%2FZCnvuvSYgBEwH%2FuU90AM43G2wPMc0qEXLeH84YWpIZYUAWiq6QsMFt4Qk%2BZONEp8nE%2FTss3GlojvHf3nQ5rKf8fdZAWpjrqeyY8EH%2BtJ64W7PTDx5tFYQhZwA2PhJIVphmNvyFFDY%2B86Vlc%3D&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UX6PTFSSC%2F20260829%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260829T231853Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=2d9dea4c1d17ddb5a4199cfb868bd310fbb61ca58a3dd666c61c59797f19b56d\" data-large-file=\"https:\/\/blogs.glowscotland.org.uk\/nl\/public\/ColtnessHS-ComputingScience\/uploads\/sites\/12638\/2013\/10\/Slide141.png\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Calculations are performed using numeric operators (+-\/*) Calculation Slides<\/p>\n","protected":false},"author":32,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17932,17012,17009],"tags":[9709,23837,23835,23836],"class_list":["post-402","post","type-post","status-publish","format-standard","hentry","category-computational-constructs","category-national-4","category-software-design-devlopment","tag-number","tag-numeric","tag-operator","tag-variable"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/posts\/402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/users\/32"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/comments?post=402"}],"version-history":[{"count":2,"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/posts\/402\/revisions"}],"predecessor-version":[{"id":419,"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/posts\/402\/revisions\/419"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/media?parent=402"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/categories?post=402"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/nl\/ColtnessHS-ComputingScience\/wp-json\/wp\/v2\/tags?post=402"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}