Erbijsommen t/m 30
Optellen
| 1. | 7 + 4 = |
16
|
10
|
11
|
17
|
| 2. | 15 + 14 = |
25
|
29
|
30
|
31
|
| 3. | 13 + 11 = |
24
|
34
|
30
|
39
|
| 4. | 4 + 3 = |
1
|
6
|
7
|
3
|
| 5. | 12 + 7 = |
16
|
14
|
19
|
11
|
| 6. | 14 + 1 = |
19
|
12
|
17
|
15
|
| 7. | 5 + 5 = |
1
|
8
|
10
|
9
|
| 8. | 7 + 6 = |
13
|
20
|
19
|
16
|
| 9. | 7 + 5 = |
13
|
15
|
11
|
12
|
| 10. | 10 + 5 = |
17
|
12
|
15
|
16
|
| 11. | 15 + 11 = |
26
|
37
|
42
|
32
|
| 12. | 3 + 1 = |
4
|
9
|
7
|
3
|