Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 320 | + | 80 | = |
|
| 2. | 120 | + | 80 | = |
|
| 3. | 640 | + | 60 | = |
|
| 4. | 120 | + | 80 | = |
|
| 5. | 320 | + | 80 | = |
|
| 6. | 830 | + | 70 | = |
|
| 7. | 990 | + | 10 | = |
|
| 8. | 230 | + | 70 | = |
|
| 9. | 810 | + | 90 | = |
|
| 10. | 910 | + | 90 | = |
|
| Oefening 2 | |||||
| 1. | 270 | + | 30 | = |
|
| 2. | 870 | + | 30 | = |
|
| 3. | 590 | + | 10 | = |
|
| 4. | 750 | + | 50 | = |
|
| 5. | 510 | + | 90 | = |
|
| 6. | 570 | + | 30 | = |
|
| 7. | 180 | + | 20 | = |
|
| 8. | 640 | + | 60 | = |
|
| 9. | 250 | + | 50 | = |
|
| 10. | 860 | + | 40 | = |
|
| Oefening 3 | |||||
| 1. | 420 | + | 80 | = |
|
| 2. | 380 | + | 20 | = |
|
| 3. | 120 | + | 80 | = |
|
| 4. | 830 | + | 70 | = |
|
| 5. | 150 | + | 50 | = |
|
| 6. | 240 | + | 60 | = |
|
| 7. | 130 | + | 70 | = |
|
| 8. | 850 | + | 50 | = |
|
| 9. | 640 | + | 60 | = |
|
| 10. | 310 | + | 90 | = |
|
| Oefening 4 | |||||
| 1. | 540 | + | 60 | = |
|
| 2. | 770 | + | 30 | = |
|
| 3. | 930 | + | 70 | = |
|
| 4. | 920 | + | 80 | = |
|
| 5. | 930 | + | 70 | = |
|
| 6. | 710 | + | 90 | = |
|
| 7. | 230 | + | 70 | = |
|
| 8. | 730 | + | 70 | = |
|
| 9. | 440 | + | 60 | = |
|
| 10. | 260 | + | 40 | = |
|