Good morning Primary 6,<\/p>\n
Here are the answers to yesterday’s maths problems.<\/p>\n
1 a) Three thousands\u00a0 b) Four hundreds\u00a0 c) Seven tens\u00a0 d) one unit<\/p>\n
2 a) Five thousand\u00a0 b) Five tens\u00a0 c) Five units\u00a0 d) Five hundreds<\/p>\n
3 a) Three thousand, eight hundred and seventy\u00a0 b) Nine thousand and fifty one<\/p>\n
c) Twelve thousand and forty five\u00a0 d) Twenty thousand and forty<\/p>\n
e) One hundred and twenty thousand, four hundred and twenty seven<\/p>\n
f) Eight hundred thousand, three hundred and fifty<\/p>\n
g) Seven hundred and two thousand and fifty<\/p>\n
h) Nine hundred and nine thousand and ninety<\/p>\n
4. a) 910\u00a0 b)20,050\u00a0 c) 60,006\u00a0 d) 100,001\u00a0 e) 909,000\u00a0 f) 111,011\u00a0 g) 1,000,000<\/p>\n
How did you get on?<\/p>\n
Some of you have been emailing me your answers at<\/p>\n
gw09mcintoshdavid3@glow.sch.uk<\/p>\n
Today, I want to look at rounding.<\/p>\n
Think about the number 27. It sits between 20 and 30 on the number line.<\/p>\n
These are the closest TENS to 27, but which is closest?<\/p>\n
27 is 7 steps away from 20 but only 3 steps away from 30 so if we are rounding to the nearest TEN then 27 is rounded (nearer) to 30.<\/p>\n
We say that, “27 rounded to the nearest ten is 30.”<\/p>\n
The rule\u00a0<\/span>is:-\u00a0<\/span>If a number has a <\/span>1<\/span>, <\/span>2<\/span>, <\/span>3<\/span>, or <\/span>4<\/span> in its units then we <\/span>round down<\/span>.<\/span><\/p>\n Examples – 24<\/span> rounds down to 20,\u00a0 61<\/span> rounds down to 60,\u00a0 353<\/span> rounds down to 350,<\/p>\n 27,451<\/span> rounds down to 27,450<\/p>\n If the number has 5<\/span>, 6<\/span>, 7<\/span>, 8<\/span> or 9<\/span> in the units then we round up<\/span>.<\/p>\n Examples – 58<\/span> rounds up to 60,\u00a0 69<\/span> rounds up to 70,\u00a0 397<\/span> rounds up to 400,<\/p>\n 1,456<\/span> rounds up to 1460,\u00a0 27,305<\/span> rounds up to 27,310<\/p>\n 1.Round these numbers to the nearest 10<\/p>\n a) 46\u00a0 b) 82\u00a0 c)19\u00a0 d) 84<\/p>\n e) 146\u00a0 f) 181\u00a0 g) 219\u00a0 h) 424<\/p>\n i) 65\u00a0 j) 195\u00a0 k) 203\u00a0 l) 888<\/p>\n 2.There were 137 pupils at the school dance. Round this to the nearest 10.<\/p>\n 3.It is 432 miles from my home to my secret submarine. Round this to the nearest 10 miles.<\/p>\n 4.My bed is 196cm long. Round this to the nearest 10 cm.<\/p>\n 5. After a lottery win was shared out each winner received \u00a3476. Round this to the nearest 10 pounds.<\/p>\n Write your answers in your jotter and I’ll post them tomorrow. You can also send them to me at<\/p>\n gw09mcintoshdavid3@glow.sch.uk<\/p>\n There are more questions like this in your Sumdog challenge this week and in your Studyladder learning pod.<\/p>\n Here is Cressida Cowell reading Chapter 11 (part 2) of, “How to Train your Dragon.”<\/p>\n