Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 780 | + | 20 | = |
|
| 2. | 750 | + | 50 | = |
|
| 3. | 860 | + | 40 | = |
|
| 4. | 650 | + | 50 | = |
|
| 5. | 890 | + | 10 | = |
|
| 6. | 440 | + | 60 | = |
|
| 7. | 610 | + | 90 | = |
|
| 8. | 530 | + | 70 | = |
|
| 9. | 390 | + | 10 | = |
|
| 10. | 520 | + | 80 | = |
|
| Oefening 2 | |||||
| 1. | 880 | + | 20 | = |
|
| 2. | 290 | + | 10 | = |
|
| 3. | 850 | + | 50 | = |
|
| 4. | 790 | + | 10 | = |
|
| 5. | 330 | + | 70 | = |
|
| 6. | 460 | + | 40 | = |
|
| 7. | 320 | + | 80 | = |
|
| 8. | 810 | + | 90 | = |
|
| 9. | 230 | + | 70 | = |
|
| 10. | 960 | + | 40 | = |
|
| Oefening 3 | |||||
| 1. | 450 | + | 50 | = |
|
| 2. | 330 | + | 70 | = |
|
| 3. | 910 | + | 90 | = |
|
| 4. | 620 | + | 80 | = |
|
| 5. | 170 | + | 30 | = |
|
| 6. | 620 | + | 80 | = |
|
| 7. | 140 | + | 60 | = |
|
| 8. | 710 | + | 90 | = |
|
| 9. | 330 | + | 70 | = |
|
| 10. | 690 | + | 10 | = |
|
| Oefening 4 | |||||
| 1. | 440 | + | 60 | = |
|
| 2. | 880 | + | 20 | = |
|
| 3. | 250 | + | 50 | = |
|
| 4. | 480 | + | 20 | = |
|
| 5. | 280 | + | 20 | = |
|
| 6. | 720 | + | 80 | = |
|
| 7. | 730 | + | 70 | = |
|
| 8. | 990 | + | 10 | = |
|
| 9. | 340 | + | 60 | = |
|
| 10. | 440 | + | 60 | = |
|