Erbijsommen t/m 40
Optellen
| 1. | 14 + 10 = |
24
|
38
|
40
|
48
|
| 2. | 7 + 1 = |
8
|
2
|
4
|
5
|
| 3. | 7 + 1 = |
2
|
5
|
4
|
8
|
| 4. | 17 + 14 = |
31
|
40
|
42
|
45
|
| 5. | 10 + 6 = |
18
|
16
|
10
|
11
|
| 6. | 7 + 2 = |
9
|
1
|
10
|
5
|
| 7. | 18 + 8 = |
29
|
24
|
26
|
43
|
| 8. | 9 + 7 = |
17
|
14
|
16
|
13
|
| 9. | 11 + 1 = |
11
|
19
|
12
|
18
|
| 10. | 14 + 6 = |
16
|
10
|
13
|
20
|
| 11. | 19 + 17 = |
48
|
47
|
36
|
35
|
| 12. | 14 + 11 = |
25
|
34
|
20
|
30
|