Erafsommen tot 40
Aftrekken
| Oefening 1 | |||||
| 1. | 28 | - | 15 | = |
|
| 2. | 31 | - | 10 | = |
|
| 3. | 31 | - | 25 | = |
|
| 4. | 29 | - | 21 | = |
|
| 5. | 15 | - | 14 | = |
|
| 6. | 39 | - | 12 | = |
|
| 7. | 26 | - | 20 | = |
|
| 8. | 38 | - | 28 | = |
|
| 9. | 12 | - | 6 | = |
|
| 10. | 12 | - | 7 | = |
|
| Oefening 2 | |||||
| 1. | 17 | - | 14 | = |
|
| 2. | 17 | - | 5 | = |
|
| 3. | 30 | - | 22 | = |
|
| 4. | 36 | - | 15 | = |
|
| 5. | 36 | - | 4 | = |
|
| 6. | 37 | - | 26 | = |
|
| 7. | 38 | - | 27 | = |
|
| 8. | 38 | - | 10 | = |
|
| 9. | 8 | - | 4 | = |
|
| 10. | 40 | - | 29 | = |
|
| Oefening 3 | |||||
| 1. | 33 | - | 2 | = |
|
| 2. | 24 | - | 8 | = |
|
| 3. | 23 | - | 3 | = |
|
| 4. | 37 | - | 1 | = |
|
| 5. | 40 | - | 31 | = |
|
| 6. | 9 | - | 5 | = |
|
| 7. | 40 | - | 23 | = |
|
| 8. | 8 | - | 1 | = |
|
| 9. | 33 | - | 20 | = |
|
| 10. | 30 | - | 30 | = |
|
| Oefening 4 | |||||
| 1. | 27 | - | 27 | = |
|
| 2. | 40 | - | 14 | = |
|
| 3. | 19 | - | 5 | = |
|
| 4. | 12 | - | 5 | = |
|
| 5. | 14 | - | 12 | = |
|
| 6. | 35 | - | 13 | = |
|
| 7. | 38 | - | 24 | = |
|
| 8. | 17 | - | 9 | = |
|
| 9. | 25 | - | 2 | = |
|
| 10. | 21 | - | 8 | = |
|