Erafsommen t/m 20 (meerkeuze)
Aftrekken
| 1. | 16 - 1 = |
18
|
20
|
15
|
17
|
| 2. | 20 - 12 = |
8
|
6
|
3
|
10
|
| 3. | 19 - 15 = |
7
|
9
|
4
|
8
|
| 4. | 14 - 8 = |
4
|
6
|
2
|
9
|
| 5. | 18 - 13 = |
5
|
1
|
9
|
3
|
| 6. | 19 - 10 = |
9
|
2
|
8
|
7
|
| 7. | 17 - 4 = |
10
|
19
|
13
|
12
|
| 8. | 17 - 16 = |
7
|
1
|
9
|
4
|
| 9. | 20 - 10 = |
3
|
7
|
6
|
10
|
| 10. | 12 - 8 = |
9
|
2
|
4
|
10
|
| 11. | 17 - 7 = |
10
|
4
|
3
|
6
|
| 12. | 5 - 2 = |
3
|
6
|
5
|
1
|