| 1. | 6 - 1 = |
9
|
10
|
2
|
5
|
| 2. | 7 - 2 = |
10
|
8
|
5
|
9
|
| 3. | 17 - 8 = |
7
|
3
|
9
|
10
|
| 4. | 15 - 12 = |
8
|
3
|
6
|
5
|
| 5. | 18 - 12 = |
8
|
9
|
6
|
2
|
| 6. | 19 - 3 = |
19
|
11
|
15
|
16
|
| 7. | 18 - 14 = |
7
|
4
|
5
|
9
|
| 8. | 17 - 16 = |
1
|
9
|
10
|
8
|
| 9. | 18 - 2 = |
20
|
15
|
14
|
16
|
| 10. | 15 - 9 = |
8
|
6
|
3
|
4
|
| 11. | 18 - 1 = |
17
|
18
|
11
|
15
|
| 12. | 4 - 1 = |
3
|
5
|
6
|
2
|
| 1. | 6 - 1 = |
9
|
10
|
2
|
5
|
| 2. | 7 - 2 = |
10
|
8
|
5
|
9
|
| 3. | 17 - 8 = |
7
|
3
|
9
|
10
|
| 4. | 15 - 12 = |
8
|
3
|
6
|
5
|
| 5. | 18 - 12 = |
8
|
9
|
6
|
2
|
| 6. | 19 - 3 = |
19
|
11
|
15
|
16
|
| 7. | 18 - 14 = |
7
|
4
|
5
|
9
|
| 8. | 17 - 16 = |
1
|
9
|
10
|
8
|
| 9. | 18 - 2 = |
20
|
15
|
14
|
16
|
| 10. | 15 - 9 = |
8
|
6
|
3
|
4
|
| 11. | 18 - 1 = |
17
|
18
|
11
|
15
|
| 12. | 4 - 1 = |
3
|
5
|
6
|
2
|