Erbijsommen tot en met 30
Erbijsommen
| 1. | 8 + 2 = |
3
|
10
|
8
|
5
|
| 2. | 14 + 11 = |
25
|
34
|
31
|
38
|
| 3. | 15 + 10 = |
22
|
25
|
20
|
40
|
| 4. | 8 + 1 = |
9
|
5
|
3
|
7
|
| 5. | 7 + 3 = |
6
|
1
|
7
|
10
|
| 6. | 10 + 5 = |
20
|
18
|
15
|
16
|
| 7. | 4 + 2 = |
6
|
1
|
10
|
8
|
| 8. | 11 + 5 = |
10
|
13
|
16
|
19
|
| 9. | 10 + 2 = |
18
|
11
|
19
|
12
|
| 10. | 12 + 8 = |
20
|
15
|
13
|
18
|
| 11. | 7 + 5 = |
11
|
12
|
19
|
16
|
| 12. | 10 + 7 = |
19
|
12
|
13
|
17
|