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