Erbijsommen tot en met 20
Erbijsommen
| 1. | 3 + 3 = |
4
|
2
|
9
|
6
|
| 2. | 4 + 1 = |
7
|
5
|
6
|
9
|
| 3. | 6 + 4 = |
10
|
3
|
4
|
1
|
| 4. | 5 + 4 = |
8
|
10
|
5
|
9
|
| 5. | 6 + 3 = |
3
|
7
|
8
|
9
|
| 6. | 8 + 8 = |
20
|
16
|
19
|
15
|
| 7. | 3 + 2 = |
7
|
4
|
10
|
5
|
| 8. | 6 + 1 = |
3
|
6
|
5
|
7
|
| 9. | 8 + 3 = |
15
|
11
|
17
|
13
|
| 10. | 5 + 1 = |
1
|
3
|
6
|
9
|
| 11. | 7 + 1 = |
4
|
8
|
6
|
9
|
| 12. | 4 + 1 = |
1
|
6
|
7
|
5
|