Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 110 | + | 90 | = |
|
| 2. | 950 | + | 50 | = |
|
| 3. | 890 | + | 10 | = |
|
| 4. | 910 | + | 90 | = |
|
| 5. | 250 | + | 50 | = |
|
| 6. | 950 | + | 50 | = |
|
| 7. | 610 | + | 90 | = |
|
| 8. | 630 | + | 70 | = |
|
| 9. | 940 | + | 60 | = |
|
| 10. | 290 | + | 10 | = |
|
| Oefening 2 | |||||
| 1. | 640 | + | 60 | = |
|
| 2. | 830 | + | 70 | = |
|
| 3. | 140 | + | 60 | = |
|
| 4. | 360 | + | 40 | = |
|
| 5. | 320 | + | 80 | = |
|
| 6. | 560 | + | 40 | = |
|
| 7. | 870 | + | 30 | = |
|
| 8. | 450 | + | 50 | = |
|
| 9. | 470 | + | 30 | = |
|
| 10. | 470 | + | 30 | = |
|
| Oefening 3 | |||||
| 1. | 120 | + | 80 | = |
|
| 2. | 180 | + | 20 | = |
|
| 3. | 280 | + | 20 | = |
|
| 4. | 210 | + | 90 | = |
|
| 5. | 710 | + | 90 | = |
|
| 6. | 860 | + | 40 | = |
|
| 7. | 520 | + | 80 | = |
|
| 8. | 670 | + | 30 | = |
|
| 9. | 560 | + | 40 | = |
|
| 10. | 820 | + | 80 | = |
|
| Oefening 4 | |||||
| 1. | 320 | + | 80 | = |
|
| 2. | 610 | + | 90 | = |
|
| 3. | 450 | + | 50 | = |
|
| 4. | 220 | + | 80 | = |
|
| 5. | 750 | + | 50 | = |
|
| 6. | 590 | + | 10 | = |
|
| 7. | 760 | + | 40 | = |
|
| 8. | 180 | + | 20 | = |
|
| 9. | 910 | + | 90 | = |
|
| 10. | 850 | + | 50 | = |
|