Erafsommen tot en met 20
Erafsommen
| 1. | 9 - 3 = |
7
|
4
|
5
|
6
|
| 2. | 17 - 3 = |
14
|
16
|
10
|
15
|
| 3. | 18 - 11 = |
7
|
8
|
4
|
1
|
| 4. | 12 - 11 = |
1
|
6
|
2
|
8
|
| 5. | 16 - 6 = |
10
|
1
|
8
|
6
|
| 6. | 12 - 12 = |
3
|
4
|
0
|
1
|
| 7. | 12 - 3 = |
9
|
5
|
2
|
4
|
| 8. | 17 - 3 = |
16
|
14
|
15
|
18
|
| 9. | 19 - 19 = |
1
|
0
|
2
|
4
|
| 10. | 14 - 1 = |
20
|
13
|
17
|
12
|
| 11. | 16 - 9 = |
7
|
4
|
10
|
1
|
| 12. | 20 - 2 = |
17
|
15
|
18
|
13
|