Erafsommen t/m 15 (meerkeuze)
Aftrekken
| 1. | 9 - 5 = |
8
|
1
|
4
|
7
|
| 2. | 10 - 8 = |
5
|
3
|
10
|
2
|
| 3. | 9 - 7 = |
3
|
2
|
1
|
7
|
| 4. | 6 - 3 = |
3
|
8
|
7
|
1
|
| 5. | 12 - 10 = |
2
|
8
|
3
|
4
|
| 6. | 14 - 3 = |
11
|
14
|
20
|
19
|
| 7. | 15 - 4 = |
11
|
20
|
17
|
19
|
| 8. | 12 - 6 = |
9
|
7
|
6
|
1
|
| 9. | 9 - 9 = |
8
|
5
|
0
|
1
|
| 10. | 14 - 10 = |
6
|
4
|
5
|
8
|
| 11. | 8 - 3 = |
8
|
6
|
2
|
5
|
| 12. | 15 - 6 = |
1
|
10
|
2
|
9
|