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