Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 730 | + | 70 | = |
|
| 2. | 450 | + | 50 | = |
|
| 3. | 280 | + | 20 | = |
|
| 4. | 180 | + | 20 | = |
|
| 5. | 670 | + | 30 | = |
|
| 6. | 570 | + | 30 | = |
|
| 7. | 280 | + | 20 | = |
|
| 8. | 680 | + | 20 | = |
|
| 9. | 720 | + | 80 | = |
|
| 10. | 760 | + | 40 | = |
|
| Oefening 2 | |||||
| 1. | 780 | + | 20 | = |
|
| 2. | 940 | + | 60 | = |
|
| 3. | 460 | + | 40 | = |
|
| 4. | 680 | + | 20 | = |
|
| 5. | 120 | + | 80 | = |
|
| 6. | 910 | + | 90 | = |
|
| 7. | 850 | + | 50 | = |
|
| 8. | 180 | + | 20 | = |
|
| 9. | 690 | + | 10 | = |
|
| 10. | 380 | + | 20 | = |
|
| Oefening 3 | |||||
| 1. | 720 | + | 80 | = |
|
| 2. | 210 | + | 90 | = |
|
| 3. | 480 | + | 20 | = |
|
| 4. | 120 | + | 80 | = |
|
| 5. | 660 | + | 40 | = |
|
| 6. | 110 | + | 90 | = |
|
| 7. | 470 | + | 30 | = |
|
| 8. | 720 | + | 80 | = |
|
| 9. | 850 | + | 50 | = |
|
| 10. | 710 | + | 90 | = |
|
| Oefening 4 | |||||
| 1. | 290 | + | 10 | = |
|
| 2. | 320 | + | 80 | = |
|
| 3. | 230 | + | 70 | = |
|
| 4. | 770 | + | 30 | = |
|
| 5. | 230 | + | 70 | = |
|
| 6. | 750 | + | 50 | = |
|
| 7. | 810 | + | 90 | = |
|
| 8. | 950 | + | 50 | = |
|
| 9. | 820 | + | 80 | = |
|
| 10. | 570 | + | 30 | = |
|