Erafsommen t/m 30
Aftrekken
| 1. | 18 - 11 = |
10
|
7
|
4
|
3
|
| 2. | 11 - 1 = |
9
|
6
|
10
|
5
|
| 3. | 26 - 24 = |
7
|
6
|
10
|
2
|
| 4. | 14 - 4 = |
10
|
8
|
9
|
4
|
| 5. | 17 - 1 = |
20
|
16
|
19
|
14
|
| 6. | 23 - 21 = |
4
|
10
|
7
|
2
|
| 7. | 30 - 28 = |
7
|
2
|
3
|
4
|
| 8. | 29 - 14 = |
16
|
15
|
10
|
11
|
| 9. | 15 - 6 = |
6
|
3
|
7
|
9
|
| 10. | 22 - 21 = |
1
|
9
|
7
|
4
|
| 11. | 21 - 4 = |
18
|
13
|
19
|
17
|
| 12. | 21 - 20 = |
1
|
7
|
4
|
8
|