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