Single Subtraction
3-1
33-11
20-13
9
When we solve a problem, do you start on the left or start on the right?
Right
222-111
111
5-2
12-2
10
33-28
When adding and subtracting, do you solve the problem "left to right" or "up to down"?
up to down
321-321
0
6-3
23-22
34-18
16
When we subtract with two numbers, 90 and 24, does the biggest number go on the top or the bottom?
Top
545-536
9
8-6
55-34
21
Why do we have to use borrowing for 90-23?
0 is smaller than 3
987-986
9-1
97-42
55
92-36
56
How do you borrow?
899