Erbijsommen t/m 30
Optellen
| 1. | 13 + 5 = |
18
|
10
|
19
|
13
|
| 2. | 11 + 1 = |
16
|
12
|
13
|
11
|
| 3. | 12 + 3 = |
15
|
16
|
20
|
13
|
| 4. | 13 + 12 = |
25
|
41
|
23
|
27
|
| 5. | 11 + 10 = |
45
|
21
|
42
|
39
|
| 6. | 10 + 8 = |
12
|
14
|
18
|
11
|
| 7. | 11 + 7 = |
14
|
18
|
10
|
16
|
| 8. | 14 + 13 = |
49
|
27
|
38
|
30
|
| 9. | 10 + 7 = |
15
|
20
|
18
|
17
|
| 10. | 14 + 8 = |
29
|
35
|
22
|
40
|
| 11. | 14 + 10 = |
29
|
50
|
34
|
24
|
| 12. | 6 + 3 = |
7
|
9
|
1
|
5
|