Erbijsommen t/m 40
Optellen
| 1. | 10 + 6 = |
18
|
14
|
12
|
16
|
| 2. | 9 + 3 = |
20
|
12
|
17
|
10
|
| 3. | 13 + 3 = |
14
|
10
|
17
|
16
|
| 4. | 17 + 2 = |
19
|
15
|
17
|
14
|
| 5. | 11 + 11 = |
30
|
22
|
37
|
23
|
| 6. | 2 + 1 = |
9
|
6
|
3
|
10
|
| 7. | 15 + 5 = |
20
|
16
|
13
|
12
|
| 8. | 15 + 2 = |
11
|
14
|
17
|
10
|
| 9. | 15 + 10 = |
25
|
44
|
50
|
23
|
| 10. | 20 + 5 = |
49
|
25
|
35
|
24
|
| 11. | 6 + 6 = |
19
|
15
|
16
|
12
|
| 12. | 11 + 7 = |
16
|
18
|
15
|
14
|