Erbijsommen t/m 30
Optellen
| 1. | 14 + 12 = |
45
|
26
|
49
|
24
|
| 2. | 4 + 3 = |
1
|
2
|
7
|
4
|
| 3. | 11 + 5 = |
18
|
10
|
13
|
16
|
| 4. | 5 + 5 = |
3
|
5
|
1
|
10
|
| 5. | 14 + 6 = |
11
|
15
|
10
|
20
|
| 6. | 11 + 10 = |
49
|
31
|
41
|
21
|
| 7. | 12 + 1 = |
18
|
20
|
13
|
15
|
| 8. | 11 + 1 = |
16
|
17
|
18
|
12
|
| 9. | 7 + 7 = |
14
|
18
|
12
|
11
|
| 10. | 3 + 1 = |
6
|
7
|
10
|
4
|
| 11. | 14 + 9 = |
23
|
37
|
40
|
24
|
| 12. | 15 + 4 = |
16
|
13
|
19
|
12
|