| 1. | 22 - 1 = |
37
|
21
|
33
|
29
|
| 2. | 10 - 9 = |
8
|
1
|
5
|
2
|
| 3. | 16 - 10 = |
2
|
7
|
6
|
5
|
| 4. | 19 - 18 = |
1
|
9
|
3
|
4
|
| 5. | 13 - 4 = |
8
|
4
|
3
|
9
|
| 6. | 23 - 2 = |
22
|
21
|
20
|
29
|
| 7. | 10 - 9 = |
1
|
7
|
9
|
4
|
| 8. | 27 - 14 = |
18
|
13
|
17
|
14
|
| 9. | 28 - 24 = |
6
|
5
|
4
|
7
|
| 10. | 18 - 3 = |
17
|
16
|
20
|
15
|
| 11. | 27 - 19 = |
3
|
8
|
5
|
6
|
| 12. | 29 - 8 = |
32
|
31
|
21
|
50
|
| 1. | 22 - 1 = |
37
|
21
|
33
|
29
|
| 2. | 10 - 9 = |
8
|
1
|
5
|
2
|
| 3. | 16 - 10 = |
2
|
7
|
6
|
5
|
| 4. | 19 - 18 = |
1
|
9
|
3
|
4
|
| 5. | 13 - 4 = |
8
|
4
|
3
|
9
|
| 6. | 23 - 2 = |
22
|
21
|
20
|
29
|
| 7. | 10 - 9 = |
1
|
7
|
9
|
4
|
| 8. | 27 - 14 = |
18
|
13
|
17
|
14
|
| 9. | 28 - 24 = |
6
|
5
|
4
|
7
|
| 10. | 18 - 3 = |
17
|
16
|
20
|
15
|
| 11. | 27 - 19 = |
3
|
8
|
5
|
6
|
| 12. | 29 - 8 = |
32
|
31
|
21
|
50
|