Erafsommen t/m 30
Aftrekken
| 1. | 13 - 3 = |
3
|
9
|
10
|
8
|
| 2. | 12 - 1 = |
10
|
11
|
14
|
15
|
| 3. | 21 - 19 = |
4
|
2
|
9
|
1
|
| 4. | 3 - 1 = |
7
|
2
|
4
|
8
|
| 5. | 21 - 10 = |
19
|
10
|
11
|
20
|
| 6. | 17 - 4 = |
16
|
20
|
13
|
14
|
| 7. | 15 - 10 = |
5
|
3
|
1
|
9
|
| 8. | 30 - 24 = |
6
|
4
|
5
|
8
|
| 9. | 17 - 5 = |
12
|
20
|
19
|
15
|
| 10. | 6 - 6 = |
6
|
7
|
0
|
10
|
| 11. | 10 - 7 = |
8
|
1
|
5
|
3
|
| 12. | 26 - 13 = |
11
|
13
|
16
|
19
|