Erbijsommen tot en met 40
Erbijsommen
| 1. | 14 + 8 = |
34
|
22
|
29
|
27
|
| 2. | 16 + 13 = |
25
|
34
|
42
|
29
|
| 3. | 13 + 1 = |
16
|
18
|
15
|
14
|
| 4. | 9 + 3 = |
11
|
15
|
20
|
12
|
| 5. | 10 + 9 = |
12
|
19
|
13
|
14
|
| 6. | 12 + 6 = |
15
|
20
|
18
|
16
|
| 7. | 18 + 8 = |
22
|
46
|
36
|
26
|
| 8. | 19 + 10 = |
40
|
47
|
29
|
46
|
| 9. | 18 + 8 = |
28
|
40
|
26
|
22
|
| 10. | 10 + 8 = |
20
|
16
|
10
|
18
|
| 11. | 6 + 4 = |
2
|
4
|
10
|
9
|
| 12. | 15 + 7 = |
47
|
24
|
44
|
22
|