Erbijsommen tot en met 40
Erbijsommen
| 1. | 17 + 15 = |
45
|
20
|
32
|
35
|
| 2. | 20 + 18 = |
38
|
26
|
34
|
31
|
| 3. | 9 + 1 = |
3
|
1
|
8
|
10
|
| 4. | 14 + 10 = |
29
|
26
|
24
|
42
|
| 5. | 18 + 17 = |
20
|
45
|
36
|
35
|
| 6. | 12 + 3 = |
15
|
17
|
18
|
20
|
| 7. | 8 + 3 = |
11
|
20
|
10
|
17
|
| 8. | 8 + 4 = |
11
|
12
|
17
|
15
|
| 9. | 16 + 3 = |
15
|
19
|
18
|
11
|
| 10. | 20 + 19 = |
48
|
39
|
44
|
31
|
| 11. | 19 + 16 = |
41
|
46
|
27
|
35
|
| 12. | 13 + 12 = |
28
|
25
|
37
|
48
|