Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 690 | + | 10 | = |
|
| 2. | 690 | + | 10 | = |
|
| 3. | 130 | + | 70 | = |
|
| 4. | 870 | + | 30 | = |
|
| 5. | 290 | + | 10 | = |
|
| 6. | 530 | + | 70 | = |
|
| 7. | 210 | + | 90 | = |
|
| 8. | 550 | + | 50 | = |
|
| 9. | 820 | + | 80 | = |
|
| 10. | 410 | + | 90 | = |
|
| Oefening 2 | |||||
| 1. | 620 | + | 80 | = |
|
| 2. | 560 | + | 40 | = |
|
| 3. | 570 | + | 30 | = |
|
| 4. | 180 | + | 20 | = |
|
| 5. | 960 | + | 40 | = |
|
| 6. | 820 | + | 80 | = |
|
| 7. | 730 | + | 70 | = |
|
| 8. | 380 | + | 20 | = |
|
| 9. | 760 | + | 40 | = |
|
| 10. | 250 | + | 50 | = |
|
| Oefening 3 | |||||
| 1. | 860 | + | 40 | = |
|
| 2. | 180 | + | 20 | = |
|
| 3. | 610 | + | 90 | = |
|
| 4. | 760 | + | 40 | = |
|
| 5. | 570 | + | 30 | = |
|
| 6. | 350 | + | 50 | = |
|
| 7. | 850 | + | 50 | = |
|
| 8. | 640 | + | 60 | = |
|
| 9. | 220 | + | 80 | = |
|
| 10. | 430 | + | 70 | = |
|
| Oefening 4 | |||||
| 1. | 960 | + | 40 | = |
|
| 2. | 530 | + | 70 | = |
|
| 3. | 350 | + | 50 | = |
|
| 4. | 160 | + | 40 | = |
|
| 5. | 150 | + | 50 | = |
|
| 6. | 440 | + | 60 | = |
|
| 7. | 850 | + | 50 | = |
|
| 8. | 690 | + | 10 | = |
|
| 9. | 840 | + | 60 | = |
|
| 10. | 480 | + | 20 | = |
|