This week children have been learning to subtract 4 digit numbers using pictorial method. They have also learnt to subtract with one exchange.. Well done 4 Red for working extremely hard.

Can you please solve these subtraction problems.

657- 179=

1015-893=

4 14 17 1.It is 478 because we subtract 7-9 but we cant subtract subtract 7 from 9 so

6 5 7. turn the 7 into a 17 and we turn the 5 into 4 and 17-9=8 remember we turn 5

-1 7 9.

——— into 4 but we can’t do 4-7 so we turn 4 into 14 and 14-7=7 and then we have

4 7 8. to subtract 6-1 but we can’t forget are exchanging so we know 6-1=5 so we take 1 more away so 6-1-1=4 so know we now the answer is 478.

11

2. 1 0 1 5

– 8 9 3

—————

1 0 2 2

—————

That will be 122 .

1)657-179=498

1015-893=122

I did column method to answer these questions.