Erafsommen tot 30
Aftrekken
| Oefening 1 | |||||
| 1. | 2 | - | 1 | = |
|
| 2. | 20 | - | 3 | = |
|
| 3. | 4 | - | 2 | = |
|
| 4. | 29 | - | 7 | = |
|
| 5. | 15 | - | 12 | = |
|
| 6. | 8 | - | 1 | = |
|
| 7. | 7 | - | 5 | = |
|
| 8. | 6 | - | 6 | = |
|
| 9. | 8 | - | 5 | = |
|
| 10. | 28 | - | 14 | = |
|
| Oefening 2 | |||||
| 1. | 14 | - | 4 | = |
|
| 2. | 22 | - | 18 | = |
|
| 3. | 20 | - | 3 | = |
|
| 4. | 6 | - | 3 | = |
|
| 5. | 8 | - | 2 | = |
|
| 6. | 8 | - | 5 | = |
|
| 7. | 4 | - | 3 | = |
|
| 8. | 8 | - | 1 | = |
|
| 9. | 24 | - | 17 | = |
|
| 10. | 11 | - | 1 | = |
|
| Oefening 3 | |||||
| 1. | 30 | - | 19 | = |
|
| 2. | 14 | - | 13 | = |
|
| 3. | 9 | - | 2 | = |
|
| 4. | 26 | - | 5 | = |
|
| 5. | 18 | - | 12 | = |
|
| 6. | 22 | - | 1 | = |
|
| 7. | 17 | - | 2 | = |
|
| 8. | 6 | - | 1 | = |
|
| 9. | 1 | - | 1 | = |
|
| 10. | 21 | - | 1 | = |
|
| Oefening 4 | |||||
| 1. | 10 | - | 1 | = |
|
| 2. | 25 | - | 3 | = |
|
| 3. | 28 | - | 24 | = |
|
| 4. | 28 | - | 13 | = |
|
| 5. | 16 | - | 13 | = |
|
| 6. | 30 | - | 19 | = |
|
| 7. | 12 | - | 5 | = |
|
| 8. | 24 | - | 3 | = |
|
| 9. | 30 | - | 27 | = |
|
| 10. | 22 | - | 17 | = |
|