Erbijsommen tot en met 20
Erbijsommen
| 1. | 5 + 5 = |
2
|
10
|
7
|
4
|
| 2. | 8 + 3 = |
13
|
11
|
15
|
14
|
| 3. | 6 + 3 = |
7
|
8
|
9
|
5
|
| 4. | 10 + 5 = |
14
|
10
|
15
|
11
|
| 5. | 7 + 3 = |
10
|
8
|
4
|
2
|
| 6. | 8 + 7 = |
12
|
18
|
15
|
11
|
| 7. | 4 + 4 = |
1
|
8
|
6
|
9
|
| 8. | 5 + 5 = |
5
|
1
|
10
|
6
|
| 9. | 3 + 3 = |
5
|
9
|
7
|
6
|
| 10. | 6 + 5 = |
11
|
15
|
16
|
20
|
| 11. | 3 + 1 = |
5
|
8
|
4
|
7
|
| 12. | 3 + 1 = |
4
|
1
|
2
|
6
|