Erbijsommen tot en met 40
Erbijsommen
| 1. | 9 + 3 = |
20
|
15
|
19
|
12
|
| 2. | 13 + 6 = |
19
|
14
|
10
|
16
|
| 3. | 19 + 7 = |
42
|
27
|
26
|
49
|
| 4. | 19 + 12 = |
31
|
26
|
50
|
28
|
| 5. | 14 + 1 = |
12
|
17
|
15
|
20
|
| 6. | 15 + 5 = |
19
|
10
|
14
|
20
|
| 7. | 18 + 15 = |
39
|
33
|
23
|
24
|
| 8. | 8 + 1 = |
9
|
5
|
3
|
1
|
| 9. | 17 + 3 = |
12
|
10
|
20
|
18
|
| 10. | 17 + 9 = |
49
|
20
|
26
|
22
|
| 11. | 14 + 9 = |
23
|
35
|
20
|
49
|
| 12. | 20 + 20 = |
40
|
21
|
38
|
29
|