Erafsommen t/m 20 (meerkeuze)
Aftrekken
| 1. | 20 - 13 = |
3
|
5
|
7
|
9
|
| 2. | 17 - 11 = |
6
|
10
|
9
|
7
|
| 3. | 11 - 2 = |
9
|
1
|
5
|
3
|
| 4. | 16 - 15 = |
10
|
6
|
1
|
8
|
| 5. | 7 - 4 = |
4
|
10
|
3
|
1
|
| 6. | 8 - 1 = |
1
|
10
|
5
|
7
|
| 7. | 9 - 5 = |
6
|
2
|
8
|
4
|
| 8. | 18 - 14 = |
10
|
9
|
4
|
2
|
| 9. | 17 - 9 = |
6
|
8
|
4
|
7
|
| 10. | 10 - 3 = |
7
|
2
|
1
|
5
|
| 11. | 18 - 11 = |
6
|
5
|
1
|
7
|
| 12. | 20 - 15 = |
9
|
10
|
5
|
2
|