Erbijsommen t/m 15
Optellen
| 1. | 5 + 2 = |
8
|
1
|
4
|
7
|
| 2. | 6 + 2 = |
4
|
8
|
10
|
5
|
| 3. | 5 + 4 = |
6
|
1
|
9
|
5
|
| 4. | 8 + 7 = |
20
|
12
|
15
|
11
|
| 5. | 7 + 6 = |
18
|
12
|
16
|
13
|
| 6. | 2 + 1 = |
2
|
4
|
3
|
7
|
| 7. | 3 + 2 = |
3
|
9
|
5
|
1
|
| 8. | 8 + 3 = |
20
|
17
|
11
|
19
|
| 9. | 7 + 2 = |
4
|
5
|
9
|
7
|
| 10. | 6 + 5 = |
17
|
13
|
11
|
12
|
| 11. | 8 + 6 = |
15
|
13
|
19
|
14
|
| 12. | 5 + 1 = |
8
|
9
|
2
|
6
|