Erbijsommen t/m 30
Optellen
| 1. | 15 + 7 = |
47
|
49
|
35
|
22
|
| 2. | 6 + 4 = |
9
|
10
|
7
|
6
|
| 3. | 14 + 12 = |
26
|
36
|
33
|
50
|
| 4. | 15 + 7 = |
26
|
22
|
49
|
31
|
| 5. | 12 + 6 = |
18
|
11
|
10
|
17
|
| 6. | 11 + 10 = |
47
|
21
|
46
|
39
|
| 7. | 9 + 4 = |
15
|
13
|
20
|
16
|
| 8. | 11 + 9 = |
13
|
15
|
20
|
11
|
| 9. | 13 + 11 = |
25
|
30
|
24
|
43
|
| 10. | 11 + 1 = |
20
|
11
|
12
|
13
|
| 11. | 13 + 8 = |
21
|
27
|
39
|
42
|
| 12. | 11 + 9 = |
15
|
18
|
20
|
19
|