Erbijsommen tot en met 30
Erbijsommen
| 1. | 15 + 9 = |
31
|
24
|
32
|
36
|
| 2. | 15 + 5 = |
20
|
18
|
10
|
14
|
| 3. | 5 + 2 = |
7
|
10
|
6
|
8
|
| 4. | 9 + 2 = |
18
|
13
|
16
|
11
|
| 5. | 15 + 13 = |
25
|
35
|
28
|
29
|
| 6. | 5 + 2 = |
6
|
3
|
7
|
4
|
| 7. | 10 + 2 = |
11
|
13
|
20
|
12
|
| 8. | 15 + 6 = |
28
|
30
|
33
|
21
|
| 9. | 1 + 1 = |
4
|
2
|
5
|
9
|
| 10. | 8 + 6 = |
12
|
20
|
14
|
10
|
| 11. | 4 + 1 = |
3
|
8
|
5
|
4
|
| 12. | 6 + 6 = |
13
|
14
|
19
|
12
|