| 1. | 15 - 4 = |
11
|
19
|
18
|
16
|
| 2. | 16 - 8 = |
3
|
2
|
8
|
7
|
| 3. | 18 - 11 = |
7
|
2
|
9
|
4
|
| 4. | 16 - 15 = |
10
|
2
|
1
|
9
|
| 5. | 15 - 1 = |
19
|
18
|
15
|
14
|
| 6. | 6 - 4 = |
8
|
5
|
2
|
9
|
| 7. | 18 - 3 = |
11
|
17
|
13
|
15
|
| 8. | 16 - 10 = |
7
|
4
|
6
|
1
|
| 9. | 8 - 3 = |
4
|
5
|
10
|
6
|
| 10. | 20 - 5 = |
15
|
13
|
14
|
12
|
| 11. | 18 - 12 = |
5
|
6
|
1
|
7
|
| 12. | 10 - 4 = |
3
|
2
|
7
|
6
|
| 1. | 15 - 4 = |
11
|
19
|
18
|
16
|
| 2. | 16 - 8 = |
3
|
2
|
8
|
7
|
| 3. | 18 - 11 = |
7
|
2
|
9
|
4
|
| 4. | 16 - 15 = |
10
|
2
|
1
|
9
|
| 5. | 15 - 1 = |
19
|
18
|
15
|
14
|
| 6. | 6 - 4 = |
8
|
5
|
2
|
9
|
| 7. | 18 - 3 = |
11
|
17
|
13
|
15
|
| 8. | 16 - 10 = |
7
|
4
|
6
|
1
|
| 9. | 8 - 3 = |
4
|
5
|
10
|
6
|
| 10. | 20 - 5 = |
15
|
13
|
14
|
12
|
| 11. | 18 - 12 = |
5
|
6
|
1
|
7
|
| 12. | 10 - 4 = |
3
|
2
|
7
|
6
|