| 1. | 28 - 1 = |
27
|
50
|
30
|
48
|
| 2. | 18 - 18 = |
0
|
1
|
4
|
5
|
| 3. | 24 - 16 = |
2
|
5
|
8
|
3
|
| 4. | 7 - 6 = |
9
|
6
|
1
|
4
|
| 5. | 23 - 22 = |
3
|
2
|
1
|
6
|
| 6. | 30 - 27 = |
10
|
3
|
7
|
6
|
| 7. | 30 - 12 = |
10
|
18
|
17
|
11
|
| 8. | 29 - 5 = |
44
|
24
|
30
|
21
|
| 9. | 19 - 18 = |
10
|
3
|
1
|
5
|
| 10. | 8 - 3 = |
3
|
5
|
2
|
8
|
| 11. | 19 - 17 = |
10
|
2
|
8
|
7
|
| 12. | 30 - 8 = |
29
|
21
|
22
|
25
|
| 1. | 28 - 1 = |
27
|
50
|
30
|
48
|
| 2. | 18 - 18 = |
0
|
1
|
4
|
5
|
| 3. | 24 - 16 = |
2
|
5
|
8
|
3
|
| 4. | 7 - 6 = |
9
|
6
|
1
|
4
|
| 5. | 23 - 22 = |
3
|
2
|
1
|
6
|
| 6. | 30 - 27 = |
10
|
3
|
7
|
6
|
| 7. | 30 - 12 = |
10
|
18
|
17
|
11
|
| 8. | 29 - 5 = |
44
|
24
|
30
|
21
|
| 9. | 19 - 18 = |
10
|
3
|
1
|
5
|
| 10. | 8 - 3 = |
3
|
5
|
2
|
8
|
| 11. | 19 - 17 = |
10
|
2
|
8
|
7
|
| 12. | 30 - 8 = |
29
|
21
|
22
|
25
|