Erbijsommen t/m 40
Optellen
| 1. | 16 + 6 = |
22
|
50
|
36
|
42
|
| 2. | 19 + 9 = |
49
|
40
|
28
|
37
|
| 3. | 17 + 16 = |
31
|
33
|
23
|
40
|
| 4. | 18 + 1 = |
14
|
16
|
19
|
13
|
| 5. | 5 + 4 = |
1
|
10
|
7
|
9
|
| 6. | 15 + 15 = |
46
|
35
|
30
|
39
|
| 7. | 6 + 4 = |
2
|
7
|
1
|
10
|
| 8. | 12 + 7 = |
19
|
13
|
12
|
17
|
| 9. | 7 + 4 = |
12
|
11
|
10
|
14
|
| 10. | 20 + 15 = |
26
|
44
|
46
|
35
|
| 11. | 13 + 9 = |
28
|
30
|
22
|
40
|
| 12. | 6 + 5 = |
17
|
14
|
16
|
11
|