Subtracting with borrowing

SUBTRACTION USING BORROWING

We start from the 1’s column.

So, 2 - 3, but we can’t do it.  

So we need to borrow from our neighbor.

Cross him out, the 3.

So we make the 3 a 2.

Then the 2 is a 12.

Then we do 12 - 3.

So 3 to get to 10 is 7

10 to get to 12 is 2

So 7 + 2 is 9

So 12 - 3 is 9

2 - 1 is 1

So our answer is 19

BORROW & PAYBACK

We start in the 1’s column.

So 2 - 3, can’t do that, so we need to make this 2 a 12 and then we pay it back straight away downstairs to our neighbor.

12 - 3 is 9.

Then it’s not 11, it’s 3 - 1 - 1.

Which is 1.

So the answer is 19.

Now I have 2 different ways of doing these take away problems and I can choose any way I like.You might find this pretty easy-

Good luck with your questions.