Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 750 | + | 50 | = |
|
| 2. | 850 | + | 50 | = |
|
| 3. | 440 | + | 60 | = |
|
| 4. | 390 | + | 10 | = |
|
| 5. | 850 | + | 50 | = |
|
| 6. | 670 | + | 30 | = |
|
| 7. | 990 | + | 10 | = |
|
| 8. | 480 | + | 20 | = |
|
| 9. | 460 | + | 40 | = |
|
| 10. | 610 | + | 90 | = |
|
| Oefening 2 | |||||
| 1. | 820 | + | 80 | = |
|
| 2. | 510 | + | 90 | = |
|
| 3. | 880 | + | 20 | = |
|
| 4. | 580 | + | 20 | = |
|
| 5. | 730 | + | 70 | = |
|
| 6. | 710 | + | 90 | = |
|
| 7. | 740 | + | 60 | = |
|
| 8. | 860 | + | 40 | = |
|
| 9. | 690 | + | 10 | = |
|
| 10. | 570 | + | 30 | = |
|
| Oefening 3 | |||||
| 1. | 990 | + | 10 | = |
|
| 2. | 260 | + | 40 | = |
|
| 3. | 620 | + | 80 | = |
|
| 4. | 370 | + | 30 | = |
|
| 5. | 210 | + | 90 | = |
|
| 6. | 520 | + | 80 | = |
|
| 7. | 920 | + | 80 | = |
|
| 8. | 470 | + | 30 | = |
|
| 9. | 140 | + | 60 | = |
|
| 10. | 880 | + | 20 | = |
|
| Oefening 4 | |||||
| 1. | 740 | + | 60 | = |
|
| 2. | 810 | + | 90 | = |
|
| 3. | 830 | + | 70 | = |
|
| 4. | 740 | + | 60 | = |
|
| 5. | 350 | + | 50 | = |
|
| 6. | 880 | + | 20 | = |
|
| 7. | 410 | + | 90 | = |
|
| 8. | 370 | + | 30 | = |
|
| 9. | 290 | + | 10 | = |
|
| 10. | 610 | + | 90 | = |
|