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 9 and 10 are:
| NINE |
| 9-9=0 |
10-9=1 |
11-9=2 |
12-9=3 |
13-9=4 |
14-9=5 |
15-9=6 |
16-9=7 |
17-9=8 |
18-9=9 |
| TEN |
| 10-10=0 |
11-10=1 |
12-10=2 |
13-10=3 |
14-10=4 |
15-10=5 |
16-10=6 |
17-10=7 |
18-10=8 |
19-10=9 |
An example of subtraction.
8 - 5 = 3
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
- |
1 |
2 |
3 |
4 |
5 |
= |
1 |
2 |
3 |
|