Erafsommen t/m 20 (meerkeuze)
Aftrekken
| 1. | 15 - 4 = |
16
|
20
|
11
|
14
|
| 2. | 20 - 6 = |
14
|
10
|
16
|
15
|
| 3. | 18 - 9 = |
5
|
6
|
9
|
4
|
| 4. | 17 - 10 = |
4
|
10
|
7
|
2
|
| 5. | 18 - 17 = |
7
|
1
|
6
|
5
|
| 6. | 19 - 5 = |
20
|
10
|
14
|
15
|
| 7. | 19 - 19 = |
7
|
5
|
0
|
3
|
| 8. | 17 - 8 = |
9
|
2
|
3
|
5
|
| 9. | 18 - 17 = |
1
|
2
|
3
|
5
|
| 10. | 14 - 13 = |
9
|
7
|
6
|
1
|
| 11. | 9 - 8 = |
4
|
1
|
7
|
8
|
| 12. | 19 - 8 = |
11
|
16
|
18
|
13
|