Erafsommen t/m 12
Aftrekken
| 1. | 3 - 1 = |
7
|
8
|
4
|
2
|
| 2. | 11 - 7 = |
7
|
6
|
5
|
4
|
| 3. | 8 - 2 = |
5
|
2
|
6
|
8
|
| 4. | 6 - 3 = |
4
|
9
|
2
|
3
|
| 5. | 7 - 4 = |
9
|
6
|
3
|
8
|
| 6. | 9 - 1 = |
8
|
6
|
4
|
10
|
| 7. | 11 - 9 = |
2
|
1
|
5
|
3
|
| 8. | 9 - 2 = |
7
|
9
|
5
|
3
|
| 9. | 10 - 3 = |
7
|
5
|
1
|
4
|
| 10. | 10 - 9 = |
1
|
9
|
3
|
2
|
| 11. | 9 - 7 = |
3
|
5
|
2
|
10
|
| 12. | 7 - 5 = |
2
|
3
|
5
|
8
|