Erafsommen tot en met 20
Erafsommen
| 1. | 13 - 3 = |
5
|
4
|
10
|
6
|
| 2. | 14 - 7 = |
1
|
2
|
7
|
5
|
| 3. | 8 - 5 = |
7
|
1
|
6
|
3
|
| 4. | 11 - 9 = |
9
|
10
|
6
|
2
|
| 5. | 10 - 2 = |
8
|
1
|
5
|
3
|
| 6. | 2 - 1 = |
5
|
1
|
6
|
2
|
| 7. | 19 - 11 = |
7
|
8
|
2
|
4
|
| 8. | 17 - 2 = |
15
|
14
|
11
|
10
|
| 9. | 14 - 8 = |
7
|
6
|
10
|
9
|
| 10. | 7 - 6 = |
2
|
1
|
3
|
9
|
| 11. | 17 - 7 = |
9
|
3
|
10
|
6
|
| 12. | 17 - 13 = |
4
|
8
|
10
|
1
|