Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 530 | + | 70 | = |
|
| 2. | 270 | + | 30 | = |
|
| 3. | 720 | + | 80 | = |
|
| 4. | 480 | + | 20 | = |
|
| 5. | 950 | + | 50 | = |
|
| 6. | 620 | + | 80 | = |
|
| 7. | 220 | + | 80 | = |
|
| 8. | 520 | + | 80 | = |
|
| 9. | 730 | + | 70 | = |
|
| 10. | 470 | + | 30 | = |
|
| Oefening 2 | |||||
| 1. | 430 | + | 70 | = |
|
| 2. | 790 | + | 10 | = |
|
| 3. | 780 | + | 20 | = |
|
| 4. | 950 | + | 50 | = |
|
| 5. | 780 | + | 20 | = |
|
| 6. | 370 | + | 30 | = |
|
| 7. | 220 | + | 80 | = |
|
| 8. | 150 | + | 50 | = |
|
| 9. | 590 | + | 10 | = |
|
| 10. | 670 | + | 30 | = |
|
| Oefening 3 | |||||
| 1. | 590 | + | 10 | = |
|
| 2. | 810 | + | 90 | = |
|
| 3. | 620 | + | 80 | = |
|
| 4. | 590 | + | 10 | = |
|
| 5. | 580 | + | 20 | = |
|
| 6. | 420 | + | 80 | = |
|
| 7. | 440 | + | 60 | = |
|
| 8. | 660 | + | 40 | = |
|
| 9. | 910 | + | 90 | = |
|
| 10. | 650 | + | 50 | = |
|
| Oefening 4 | |||||
| 1. | 130 | + | 70 | = |
|
| 2. | 150 | + | 50 | = |
|
| 3. | 790 | + | 10 | = |
|
| 4. | 390 | + | 10 | = |
|
| 5. | 410 | + | 90 | = |
|
| 6. | 450 | + | 50 | = |
|
| 7. | 620 | + | 80 | = |
|
| 8. | 730 | + | 70 | = |
|
| 9. | 510 | + | 90 | = |
|
| 10. | 740 | + | 60 | = |
|