Erbijsommen tot 20
Optellen
| Oefening 1 | |||||
| 1. | 5 | + | 4 | = |
|
| 2. | 6 | + | 1 | = |
|
| 3. | 8 | + | 7 | = |
|
| 4. | 7 | + | 1 | = |
|
| 5. | 9 | + | 4 | = |
|
| 6. | 7 | + | 1 | = |
|
| 7. | 4 | + | 2 | = |
|
| 8. | 10 | + | 6 | = |
|
| 9. | 7 | + | 5 | = |
|
| 10. | 9 | + | 9 | = |
|
| Oefening 2 | |||||
| 1. | 9 | + | 8 | = |
|
| 2. | 3 | + | 1 | = |
|
| 3. | 8 | + | 7 | = |
|
| 4. | 10 | + | 8 | = |
|
| 5. | 6 | + | 5 | = |
|
| 6. | 4 | + | 4 | = |
|
| 7. | 7 | + | 5 | = |
|
| 8. | 8 | + | 7 | = |
|
| 9. | 10 | + | 4 | = |
|
| 10. | 10 | + | 7 | = |
|
| Oefening 3 | |||||
| 1. | 9 | + | 2 | = |
|
| 2. | 10 | + | 9 | = |
|
| 3. | 2 | + | 1 | = |
|
| 4. | 8 | + | 8 | = |
|
| 5. | 2 | + | 1 | = |
|
| 6. | 8 | + | 5 | = |
|
| 7. | 7 | + | 2 | = |
|
| 8. | 10 | + | 5 | = |
|
| 9. | 6 | + | 1 | = |
|
| 10. | 6 | + | 2 | = |
|
| Oefening 4 | |||||
| 1. | 6 | + | 5 | = |
|
| 2. | 4 | + | 4 | = |
|
| 3. | 7 | + | 6 | = |
|
| 4. | 10 | + | 6 | = |
|
| 5. | 4 | + | 2 | = |
|
| 6. | 7 | + | 3 | = |
|
| 7. | 4 | + | 1 | = |
|
| 8. | 8 | + | 4 | = |
|
| 9. | 9 | + | 5 | = |
|
| 10. | 9 | + | 8 | = |
|