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