Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 840 | + | 60 | = |
|
| 2. | 520 | + | 80 | = |
|
| 3. | 350 | + | 50 | = |
|
| 4. | 560 | + | 40 | = |
|
| 5. | 520 | + | 80 | = |
|
| 6. | 510 | + | 90 | = |
|
| 7. | 820 | + | 80 | = |
|
| 8. | 850 | + | 50 | = |
|
| 9. | 450 | + | 50 | = |
|
| 10. | 830 | + | 70 | = |
|
| Oefening 2 | |||||
| 1. | 450 | + | 50 | = |
|
| 2. | 910 | + | 90 | = |
|
| 3. | 830 | + | 70 | = |
|
| 4. | 480 | + | 20 | = |
|
| 5. | 330 | + | 70 | = |
|
| 6. | 210 | + | 90 | = |
|
| 7. | 980 | + | 20 | = |
|
| 8. | 770 | + | 30 | = |
|
| 9. | 450 | + | 50 | = |
|
| 10. | 910 | + | 90 | = |
|
| Oefening 3 | |||||
| 1. | 820 | + | 80 | = |
|
| 2. | 980 | + | 20 | = |
|
| 3. | 160 | + | 40 | = |
|
| 4. | 720 | + | 80 | = |
|
| 5. | 650 | + | 50 | = |
|
| 6. | 370 | + | 30 | = |
|
| 7. | 370 | + | 30 | = |
|
| 8. | 450 | + | 50 | = |
|
| 9. | 170 | + | 30 | = |
|
| 10. | 280 | + | 20 | = |
|
| Oefening 4 | |||||
| 1. | 660 | + | 40 | = |
|
| 2. | 350 | + | 50 | = |
|
| 3. | 130 | + | 70 | = |
|
| 4. | 990 | + | 10 | = |
|
| 5. | 710 | + | 90 | = |
|
| 6. | 570 | + | 30 | = |
|
| 7. | 240 | + | 60 | = |
|
| 8. | 990 | + | 10 | = |
|
| 9. | 660 | + | 40 | = |
|
| 10. | 120 | + | 80 | = |
|