Erbijsommen tot en met 50
Erbijsommen
| 1. | 13 + 7 = |
15
|
19
|
20
|
16
|
| 2. | 18 + 10 = |
33
|
28
|
34
|
50
|
| 3. | 8 + 3 = |
10
|
12
|
11
|
17
|
| 4. | 5 + 4 = |
7
|
3
|
9
|
1
|
| 5. | 13 + 5 = |
15
|
18
|
10
|
12
|
| 6. | 11 + 7 = |
19
|
11
|
18
|
17
|
| 7. | 20 + 16 = |
41
|
36
|
29
|
27
|
| 8. | 15 + 13 = |
28
|
48
|
25
|
34
|
| 9. | 5 + 4 = |
9
|
7
|
2
|
5
|
| 10. | 21 + 20 = |
27
|
41
|
31
|
23
|
| 11. | 23 + 8 = |
24
|
45
|
31
|
25
|
| 12. | 21 + 2 = |
31
|
26
|
47
|
23
|