Erbijsommen tot en met 40
Erbijsommen
| 1. | 10 + 10 = |
10
|
11
|
14
|
20
|
| 2. | 20 + 19 = |
26
|
31
|
39
|
46
|
| 3. | 16 + 10 = |
38
|
30
|
27
|
26
|
| 4. | 19 + 9 = |
50
|
33
|
48
|
28
|
| 5. | 15 + 9 = |
35
|
24
|
42
|
48
|
| 6. | 16 + 8 = |
45
|
33
|
46
|
24
|
| 7. | 14 + 14 = |
26
|
49
|
28
|
48
|
| 8. | 12 + 1 = |
13
|
19
|
11
|
16
|
| 9. | 15 + 5 = |
20
|
11
|
17
|
16
|
| 10. | 15 + 14 = |
29
|
39
|
32
|
47
|
| 11. | 12 + 7 = |
16
|
20
|
15
|
19
|
| 12. | 11 + 10 = |
26
|
41
|
21
|
50
|