Erbijsommen tot en met 40
Erbijsommen
| 1. | 14 + 4 = |
19
|
17
|
18
|
20
|
| 2. | 17 + 16 = |
43
|
22
|
33
|
21
|
| 3. | 13 + 4 = |
14
|
13
|
17
|
18
|
| 4. | 18 + 11 = |
37
|
27
|
29
|
46
|
| 5. | 13 + 3 = |
13
|
16
|
14
|
20
|
| 6. | 19 + 16 = |
43
|
35
|
46
|
31
|
| 7. | 13 + 6 = |
19
|
15
|
20
|
11
|
| 8. | 16 + 14 = |
30
|
34
|
36
|
44
|
| 9. | 17 + 2 = |
11
|
14
|
20
|
19
|
| 10. | 15 + 7 = |
22
|
20
|
33
|
23
|
| 11. | 19 + 18 = |
35
|
37
|
20
|
46
|
| 12. | 17 + 12 = |
34
|
23
|
29
|
32
|