Subtraction
Subtraction is removing some objects from a group. The meaning of 5-3=2 is
that three objects are taken away from a group of five objects and two objects remain.
The subtraction facts for 7 and 8 are:
| SEVEN |
| 7-7=0 |
8-7=1 |
9-7=2 |
10-7=3 |
11-7=4 |
12-7=5 |
13-7=6 |
14-7=7 |
15-7=8 |
16-7=9 |
| EIGHT |
| 8-8=0 |
9-8=1 |
10-8=2 |
11-8=3 |
12-8=4 |
13-8=5 |
14-8=6 |
15-8=7 |
16-8=8 |
17-8=9 |
An example of subtraction.
8 - 5 = 3
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
- |
1 |
2 |
3 |
4 |
5 |
= |
1 |
2 |
3 |
|
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