Inversion questions picture resources

These pictures are to be used for the inversion exercises, and should be told to the children as story problems, shown as a three stage presentation revealing each part as you tell them the story to help them reason and not count. The children reason that 4 in and 4 out make no difference to the original number. They should not count the 4 in and then count 4 out so the presentation should be timed fast enough for them not to be able to count.

- 3+ 4

8

- 3+ 4

8

- 4+ 4

8

1 stage 2 stage 3 stage

How many lollies are in the box now?’

Say: ‘The mum put 8 lollies in the box in the morning’.

Sat: ‘In the afternoon she put 4 lollies in the box.’ Say ‘Then the children came and took 4 out.

Maths session 1 BK 1

+4 -4

7

1O

+4 -3

9

1P

Maths session 3 BK 3

- 3+ 4

5

3J

+5

6

– 5

3K

Maths session 4 BK 4

+ 3

6

- 4

4J

+ 3 - 2

4

4K

Maths session 7 BK 7

-4

9

7D

+ 4

+ 7

8

7E

- 7

+ 5 - 4

9

7F