Erbijsommen tot en met 40
Erbijsommen
| 1. | 20 + 7 = |
22
|
27
|
45
|
20
|
| 2. | 8 + 3 = |
18
|
19
|
11
|
13
|
| 3. | 20 + 12 = |
29
|
26
|
32
|
47
|
| 4. | 17 + 9 = |
27
|
34
|
39
|
26
|
| 5. | 16 + 14 = |
36
|
27
|
30
|
39
|
| 6. | 14 + 5 = |
14
|
16
|
15
|
19
|
| 7. | 19 + 1 = |
20
|
13
|
12
|
17
|
| 8. | 17 + 1 = |
19
|
18
|
11
|
14
|
| 9. | 12 + 10 = |
22
|
23
|
45
|
25
|
| 10. | 17 + 17 = |
48
|
47
|
34
|
26
|
| 11. | 9 + 7 = |
16
|
18
|
13
|
20
|
| 12. | 19 + 1 = |
17
|
10
|
11
|
20
|