Erbijsommen tot en met 30
Erbijsommen
| 1. | 7 + 1 = |
8
|
4
|
1
|
5
|
| 2. | 15 + 5 = |
11
|
20
|
17
|
13
|
| 3. | 13 + 10 = |
34
|
23
|
35
|
32
|
| 4. | 10 + 5 = |
16
|
15
|
18
|
17
|
| 5. | 4 + 4 = |
8
|
1
|
10
|
3
|
| 6. | 14 + 9 = |
23
|
35
|
21
|
30
|
| 7. | 13 + 1 = |
14
|
16
|
20
|
17
|
| 8. | 9 + 9 = |
16
|
18
|
15
|
14
|
| 9. | 10 + 7 = |
10
|
11
|
14
|
17
|
| 10. | 12 + 2 = |
18
|
14
|
17
|
11
|
| 11. | 10 + 1 = |
11
|
12
|
19
|
15
|
| 12. | 11 + 1 = |
19
|
10
|
11
|
12
|