Erbijsommen tot en met 40
Erbijsommen
| 1. | 5 + 2 = |
7
|
9
|
6
|
3
|
| 2. | 18 + 13 = |
46
|
24
|
29
|
31
|
| 3. | 13 + 8 = |
23
|
33
|
21
|
22
|
| 4. | 9 + 2 = |
12
|
13
|
11
|
18
|
| 5. | 14 + 11 = |
25
|
40
|
22
|
35
|
| 6. | 12 + 11 = |
48
|
23
|
31
|
50
|
| 7. | 15 + 4 = |
12
|
19
|
16
|
10
|
| 8. | 18 + 10 = |
34
|
27
|
28
|
32
|
| 9. | 17 + 11 = |
40
|
28
|
21
|
33
|
| 10. | 18 + 11 = |
35
|
29
|
47
|
36
|
| 11. | 9 + 6 = |
15
|
16
|
11
|
20
|
| 12. | 20 + 5 = |
25
|
48
|
24
|
40
|