Erafsommen tot en met 20
Erafsommen
| 1. | 12 - 7 = |
10
|
4
|
7
|
5
|
| 2. | 19 - 18 = |
10
|
1
|
2
|
9
|
| 3. | 15 - 8 = |
8
|
5
|
7
|
2
|
| 4. | 14 - 1 = |
10
|
13
|
15
|
11
|
| 5. | 11 - 8 = |
1
|
2
|
5
|
3
|
| 6. | 15 - 7 = |
2
|
9
|
8
|
1
|
| 7. | 16 - 5 = |
20
|
16
|
11
|
10
|
| 8. | 13 - 12 = |
4
|
1
|
6
|
9
|
| 9. | 15 - 1 = |
20
|
14
|
19
|
13
|
| 10. | 16 - 12 = |
4
|
9
|
6
|
8
|
| 11. | 6 - 6 = |
0
|
1
|
6
|
10
|
| 12. | 11 - 8 = |
3
|
9
|
8
|
7
|