Erbijsommen t/m 50
Optellen
| 1. | 10 + 10 = |
20
|
11
|
17
|
15
|
| 2. | 22 + 1 = |
23
|
29
|
47
|
28
|
| 3. | 15 + 13 = |
27
|
24
|
28
|
31
|
| 4. | 5 + 5 = |
10
|
1
|
6
|
9
|
| 5. | 19 + 2 = |
32
|
21
|
22
|
23
|
| 6. | 14 + 6 = |
17
|
14
|
20
|
12
|
| 7. | 18 + 8 = |
24
|
26
|
42
|
49
|
| 8. | 25 + 23 = |
32
|
48
|
44
|
42
|
| 9. | 1 + 1 = |
6
|
9
|
2
|
3
|
| 10. | 19 + 16 = |
28
|
30
|
35
|
22
|
| 11. | 10 + 2 = |
17
|
12
|
20
|
16
|
| 12. | 13 + 3 = |
11
|
15
|
19
|
16
|