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