| 1. | 18 - 16 = |
1
|
2
|
3
|
4
|
| 2. | 17 - 11 = |
6
|
2
|
4
|
9
|
| 3. | 5 - 4 = |
10
|
1
|
6
|
7
|
| 4. | 6 - 1 = |
4
|
3
|
9
|
5
|
| 5. | 20 - 9 = |
12
|
19
|
15
|
11
|
| 6. | 14 - 6 = |
5
|
8
|
10
|
9
|
| 7. | 8 - 6 = |
3
|
4
|
9
|
2
|
| 8. | 5 - 2 = |
3
|
1
|
7
|
4
|
| 9. | 17 - 17 = |
5
|
4
|
10
|
0
|
| 10. | 12 - 11 = |
10
|
1
|
2
|
4
|
| 11. | 20 - 5 = |
13
|
18
|
17
|
15
|
| 12. | 12 - 5 = |
5
|
7
|
6
|
3
|
| 1. | 18 - 16 = |
1
|
2
|
3
|
4
|
| 2. | 17 - 11 = |
6
|
2
|
4
|
9
|
| 3. | 5 - 4 = |
10
|
1
|
6
|
7
|
| 4. | 6 - 1 = |
4
|
3
|
9
|
5
|
| 5. | 20 - 9 = |
12
|
19
|
15
|
11
|
| 6. | 14 - 6 = |
5
|
8
|
10
|
9
|
| 7. | 8 - 6 = |
3
|
4
|
9
|
2
|
| 8. | 5 - 2 = |
3
|
1
|
7
|
4
|
| 9. | 17 - 17 = |
5
|
4
|
10
|
0
|
| 10. | 12 - 11 = |
10
|
1
|
2
|
4
|
| 11. | 20 - 5 = |
13
|
18
|
17
|
15
|
| 12. | 12 - 5 = |
5
|
7
|
6
|
3
|