| 1. | 13 - 4 = |
8
|
7
|
9
|
4
|
| 2. | 9 - 1 = |
5
|
3
|
10
|
8
|
| 3. | 11 - 3 = |
10
|
5
|
8
|
2
|
| 4. | 18 - 2 = |
13
|
20
|
16
|
11
|
| 5. | 18 - 3 = |
20
|
10
|
17
|
15
|
| 6. | 9 - 7 = |
2
|
3
|
8
|
9
|
| 7. | 19 - 18 = |
1
|
5
|
3
|
2
|
| 8. | 7 - 1 = |
7
|
4
|
2
|
6
|
| 9. | 19 - 19 = |
7
|
9
|
0
|
2
|
| 10. | 16 - 10 = |
2
|
6
|
7
|
3
|
| 11. | 10 - 5 = |
1
|
5
|
8
|
6
|
| 12. | 9 - 4 = |
1
|
5
|
10
|
6
|
| 1. | 13 - 4 = |
8
|
7
|
9
|
4
|
| 2. | 9 - 1 = |
5
|
3
|
10
|
8
|
| 3. | 11 - 3 = |
10
|
5
|
8
|
2
|
| 4. | 18 - 2 = |
13
|
20
|
16
|
11
|
| 5. | 18 - 3 = |
20
|
10
|
17
|
15
|
| 6. | 9 - 7 = |
2
|
3
|
8
|
9
|
| 7. | 19 - 18 = |
1
|
5
|
3
|
2
|
| 8. | 7 - 1 = |
7
|
4
|
2
|
6
|
| 9. | 19 - 19 = |
7
|
9
|
0
|
2
|
| 10. | 16 - 10 = |
2
|
6
|
7
|
3
|
| 11. | 10 - 5 = |
1
|
5
|
8
|
6
|
| 12. | 9 - 4 = |
1
|
5
|
10
|
6
|