Erafsommen tot en met 20
Erafsommen
| 1. | 19 - 2 = |
12
|
17
|
13
|
16
|
| 2. | 2 - 1 = |
8
|
10
|
1
|
2
|
| 3. | 3 - 1 = |
8
|
2
|
7
|
1
|
| 4. | 20 - 18 = |
6
|
2
|
5
|
7
|
| 5. | 3 - 3 = |
9
|
8
|
0
|
5
|
| 6. | 17 - 17 = |
10
|
0
|
9
|
2
|
| 7. | 18 - 2 = |
14
|
16
|
20
|
13
|
| 8. | 9 - 2 = |
8
|
4
|
7
|
6
|
| 9. | 13 - 8 = |
5
|
4
|
3
|
7
|
| 10. | 7 - 1 = |
1
|
10
|
6
|
2
|
| 11. | 9 - 5 = |
4
|
2
|
8
|
9
|
| 12. | 14 - 9 = |
4
|
1
|
5
|
8
|