Erafsommen t/m 20 (meerkeuze)
Aftrekken
| 1. | 11 - 9 = |
8
|
6
|
2
|
4
|
| 2. | 15 - 6 = |
9
|
3
|
1
|
10
|
| 3. | 13 - 7 = |
2
|
9
|
1
|
6
|
| 4. | 19 - 18 = |
9
|
1
|
2
|
10
|
| 5. | 13 - 11 = |
2
|
8
|
3
|
1
|
| 6. | 6 - 5 = |
1
|
4
|
3
|
5
|
| 7. | 8 - 8 = |
0
|
10
|
9
|
8
|
| 8. | 15 - 11 = |
7
|
4
|
3
|
2
|
| 9. | 6 - 2 = |
10
|
4
|
6
|
8
|
| 10. | 18 - 5 = |
12
|
20
|
13
|
19
|
| 11. | 14 - 11 = |
5
|
8
|
3
|
10
|
| 12. | 20 - 12 = |
3
|
2
|
10
|
8
|