Erbijsommen t/m 30
Optellen
| 1. | 4 + 4 = |
3
|
8
|
4
|
1
|
| 2. | 15 + 13 = |
28
|
49
|
45
|
43
|
| 3. | 13 + 8 = |
35
|
20
|
39
|
21
|
| 4. | 14 + 6 = |
18
|
19
|
14
|
20
|
| 5. | 14 + 12 = |
46
|
29
|
38
|
26
|
| 6. | 13 + 13 = |
23
|
49
|
26
|
30
|
| 7. | 7 + 2 = |
6
|
2
|
10
|
9
|
| 8. | 14 + 7 = |
35
|
29
|
21
|
47
|
| 9. | 11 + 2 = |
17
|
15
|
16
|
13
|
| 10. | 10 + 2 = |
17
|
14
|
12
|
11
|
| 11. | 5 + 1 = |
2
|
10
|
6
|
9
|
| 12. | 13 + 3 = |
16
|
10
|
15
|
18
|