Erafsommen t/m 30
Aftrekken
| 1. | 5 - 3 = |
6
|
8
|
2
|
4
|
| 2. | 30 - 25 = |
8
|
2
|
3
|
5
|
| 3. | 22 - 16 = |
9
|
4
|
3
|
6
|
| 4. | 30 - 11 = |
12
|
20
|
19
|
10
|
| 5. | 20 - 5 = |
11
|
20
|
15
|
14
|
| 6. | 18 - 12 = |
6
|
10
|
1
|
8
|
| 7. | 4 - 2 = |
10
|
9
|
2
|
4
|
| 8. | 30 - 30 = |
1
|
3
|
10
|
0
|
| 9. | 28 - 14 = |
10
|
20
|
11
|
14
|
| 10. | 28 - 12 = |
20
|
12
|
16
|
10
|
| 11. | 11 - 7 = |
4
|
10
|
8
|
2
|
| 12. | 9 - 7 = |
6
|
9
|
2
|
3
|