1. Estimating

2. Mental Maths Learning Objectives
I will be able to use a number of different mental strategies to add and subtract.

3. Adding on 39 = 22 32 39 5 10

4. Adding on = 63 52 62 63 1 10

5. Adding on = 58 43 53 58 5 10

6. Now you try!

7. Subtracting strategy = 58 43 33 28 5 10

8. Subtracting strategy = 10 33 13 10 10 10 3

9. Subtracting = 56 73 63 56 7 10

10. You can now do it!

11. Mental Maths Learning Objectives
I am now able to use a number of different mental strategies to add and subtract.

12. Estimating Main Learning Objective
I will be able to estimate objects and numbers accurately.

13. When do
we estimate?

14. How many lions here? 10

15. How many
cubes in
this jar?

16. Approximately what number is the arrow pointing to?10

17. Approximately where are these numbers?10

18. While working Remember today’s Main Learning Objective
I will be able to estimate objects and numbers accurately.

19. I will be able to estimate objects and numbers accurately.
Plenary
Today’s two learning objectives were:
I will be able to use a number of different mental strategies to add and subtract.
I will be able to estimate objects and numbers accurately.