Erbijsommen tot en met 40
Erbijsommen
| 1. | 20 + 3 = |
36
|
45
|
23
|
49
|
| 2. | 17 + 6 = |
40
|
23
|
27
|
44
|
| 3. | 17 + 5 = |
22
|
21
|
29
|
38
|
| 4. | 10 + 5 = |
15
|
10
|
11
|
17
|
| 5. | 11 + 5 = |
17
|
18
|
19
|
16
|
| 6. | 15 + 13 = |
29
|
28
|
47
|
23
|
| 7. | 6 + 5 = |
15
|
11
|
19
|
18
|
| 8. | 12 + 7 = |
12
|
13
|
19
|
15
|
| 9. | 9 + 5 = |
12
|
17
|
14
|
10
|
| 10. | 17 + 17 = |
33
|
31
|
34
|
37
|
| 11. | 11 + 4 = |
15
|
11
|
13
|
18
|
| 12. | 17 + 9 = |
27
|
36
|
25
|
26
|