Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 430 | + | 70 | = |
|
| 2. | 510 | + | 90 | = |
|
| 3. | 860 | + | 40 | = |
|
| 4. | 730 | + | 70 | = |
|
| 5. | 180 | + | 20 | = |
|
| 6. | 790 | + | 10 | = |
|
| 7. | 440 | + | 60 | = |
|
| 8. | 940 | + | 60 | = |
|
| 9. | 250 | + | 50 | = |
|
| 10. | 670 | + | 30 | = |
|
| Oefening 2 | |||||
| 1. | 950 | + | 50 | = |
|
| 2. | 630 | + | 70 | = |
|
| 3. | 690 | + | 10 | = |
|
| 4. | 220 | + | 80 | = |
|
| 5. | 330 | + | 70 | = |
|
| 6. | 280 | + | 20 | = |
|
| 7. | 950 | + | 50 | = |
|
| 8. | 110 | + | 90 | = |
|
| 9. | 250 | + | 50 | = |
|
| 10. | 830 | + | 70 | = |
|
| Oefening 3 | |||||
| 1. | 220 | + | 80 | = |
|
| 2. | 540 | + | 60 | = |
|
| 3. | 290 | + | 10 | = |
|
| 4. | 220 | + | 80 | = |
|
| 5. | 340 | + | 60 | = |
|
| 6. | 590 | + | 10 | = |
|
| 7. | 440 | + | 60 | = |
|
| 8. | 990 | + | 10 | = |
|
| 9. | 130 | + | 70 | = |
|
| 10. | 110 | + | 90 | = |
|
| Oefening 4 | |||||
| 1. | 770 | + | 30 | = |
|
| 2. | 290 | + | 10 | = |
|
| 3. | 470 | + | 30 | = |
|
| 4. | 610 | + | 90 | = |
|
| 5. | 670 | + | 30 | = |
|
| 6. | 250 | + | 50 | = |
|
| 7. | 170 | + | 30 | = |
|
| 8. | 920 | + | 80 | = |
|
| 9. | 920 | + | 80 | = |
|
| 10. | 520 | + | 80 | = |
|