Erafsommen tot en met 20
Erafsommen
| 1. | 13 - 8 = |
5
|
4
|
6
|
7
|
| 2. | 6 - 2 = |
2
|
4
|
7
|
3
|
| 3. | 17 - 5 = |
15
|
12
|
20
|
16
|
| 4. | 17 - 2 = |
18
|
15
|
19
|
11
|
| 5. | 7 - 1 = |
5
|
6
|
10
|
3
|
| 6. | 18 - 2 = |
14
|
11
|
19
|
16
|
| 7. | 20 - 2 = |
18
|
20
|
13
|
12
|
| 8. | 16 - 8 = |
5
|
8
|
3
|
10
|
| 9. | 18 - 13 = |
2
|
5
|
6
|
1
|
| 10. | 2 - 1 = |
10
|
7
|
1
|
3
|
| 11. | 8 - 3 = |
6
|
4
|
8
|
5
|
| 12. | 18 - 14 = |
4
|
9
|
2
|
5
|