Good morning everyone.
I hope you had a good day yesterday.
Today we will be looking at adding and subtracting by tens. Some questions ask to use base 10, however, we cannot use physical base 10 as it is in school. I will attach a picture below of what it looks like and you can draw the base 10 required at the side of the question to help you answer it.
There is a video to help with today’s work to watch first:
https://vimeo.com/415461655
Here is the maths sheet for today:
Lesson-1-Add-and-subtract-10s-2019
And here is the answer sheet once complete:
Lesson-1-Answers-Add-and-subtract-10s-2019
This is Base 10. It is a fantastic concrete counting material that we use in school. The small cubes are worth 1 unit and the long cuboid’s are worth 10. This should help with answering the questions.
Take care,
Mrs Love