| 1. | 21 - 4 = |
19
|
20
|
16
|
17
|
| 2. | 18 - 13 = |
8
|
6
|
1
|
5
|
| 3. | 5 - 2 = |
10
|
2
|
3
|
7
|
| 4. | 17 - 5 = |
10
|
20
|
12
|
17
|
| 5. | 38 - 20 = |
18
|
12
|
11
|
19
|
| 6. | 38 - 7 = |
21
|
31
|
35
|
27
|
| 7. | 23 - 1 = |
41
|
35
|
22
|
37
|
| 8. | 40 - 21 = |
11
|
15
|
17
|
19
|
| 9. | 47 - 41 = |
6
|
2
|
10
|
4
|
| 10. | 50 - 4 = |
37
|
36
|
46
|
31
|
| 11. | 43 - 36 = |
7
|
2
|
4
|
9
|
| 12. | 35 - 28 = |
9
|
4
|
2
|
7
|
| 1. | 21 - 4 = |
19
|
20
|
16
|
17
|
| 2. | 18 - 13 = |
8
|
6
|
1
|
5
|
| 3. | 5 - 2 = |
10
|
2
|
3
|
7
|
| 4. | 17 - 5 = |
10
|
20
|
12
|
17
|
| 5. | 38 - 20 = |
18
|
12
|
11
|
19
|
| 6. | 38 - 7 = |
21
|
31
|
35
|
27
|
| 7. | 23 - 1 = |
41
|
35
|
22
|
37
|
| 8. | 40 - 21 = |
11
|
15
|
17
|
19
|
| 9. | 47 - 41 = |
6
|
2
|
10
|
4
|
| 10. | 50 - 4 = |
37
|
36
|
46
|
31
|
| 11. | 43 - 36 = |
7
|
2
|
4
|
9
|
| 12. | 35 - 28 = |
9
|
4
|
2
|
7
|