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