Erbijsommen t/m 30
Optellen
| 1. | 12 + 4 = |
16
|
20
|
10
|
13
|
| 2. | 6 + 6 = |
20
|
19
|
18
|
12
|
| 3. | 15 + 10 = |
37
|
25
|
31
|
26
|
| 4. | 7 + 7 = |
15
|
14
|
10
|
13
|
| 5. | 13 + 8 = |
32
|
23
|
22
|
21
|
| 6. | 12 + 5 = |
18
|
17
|
13
|
20
|
| 7. | 5 + 2 = |
8
|
10
|
7
|
4
|
| 8. | 7 + 5 = |
15
|
17
|
12
|
10
|
| 9. | 8 + 3 = |
18
|
15
|
17
|
11
|
| 10. | 5 + 3 = |
7
|
8
|
6
|
5
|
| 11. | 12 + 8 = |
20
|
13
|
14
|
19
|
| 12. | 10 + 6 = |
15
|
20
|
10
|
16
|