Erbijsommen tot en met 30
Erbijsommen
| 1. | 10 + 9 = |
12
|
15
|
19
|
13
|
| 2. | 11 + 3 = |
17
|
14
|
11
|
12
|
| 3. | 14 + 2 = |
13
|
16
|
14
|
15
|
| 4. | 12 + 10 = |
44
|
48
|
22
|
29
|
| 5. | 4 + 3 = |
10
|
7
|
6
|
5
|
| 6. | 9 + 3 = |
11
|
12
|
20
|
17
|
| 7. | 15 + 9 = |
24
|
48
|
46
|
41
|
| 8. | 11 + 11 = |
26
|
27
|
22
|
46
|
| 9. | 6 + 5 = |
13
|
14
|
11
|
19
|
| 10. | 14 + 6 = |
13
|
16
|
20
|
19
|
| 11. | 2 + 1 = |
1
|
3
|
5
|
7
|
| 12. | 12 + 11 = |
37
|
47
|
23
|
48
|