Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 290 | + | 10 | = |
|
| 2. | 940 | + | 60 | = |
|
| 3. | 950 | + | 50 | = |
|
| 4. | 220 | + | 80 | = |
|
| 5. | 520 | + | 80 | = |
|
| 6. | 570 | + | 30 | = |
|
| 7. | 890 | + | 10 | = |
|
| 8. | 580 | + | 20 | = |
|
| 9. | 460 | + | 40 | = |
|
| 10. | 410 | + | 90 | = |
|
| Oefening 2 | |||||
| 1. | 920 | + | 80 | = |
|
| 2. | 870 | + | 30 | = |
|
| 3. | 850 | + | 50 | = |
|
| 4. | 120 | + | 80 | = |
|
| 5. | 210 | + | 90 | = |
|
| 6. | 570 | + | 30 | = |
|
| 7. | 140 | + | 60 | = |
|
| 8. | 850 | + | 50 | = |
|
| 9. | 260 | + | 40 | = |
|
| 10. | 350 | + | 50 | = |
|
| Oefening 3 | |||||
| 1. | 790 | + | 10 | = |
|
| 2. | 610 | + | 90 | = |
|
| 3. | 920 | + | 80 | = |
|
| 4. | 580 | + | 20 | = |
|
| 5. | 790 | + | 10 | = |
|
| 6. | 350 | + | 50 | = |
|
| 7. | 410 | + | 90 | = |
|
| 8. | 750 | + | 50 | = |
|
| 9. | 340 | + | 60 | = |
|
| 10. | 920 | + | 80 | = |
|
| Oefening 4 | |||||
| 1. | 160 | + | 40 | = |
|
| 2. | 860 | + | 40 | = |
|
| 3. | 630 | + | 70 | = |
|
| 4. | 510 | + | 90 | = |
|
| 5. | 410 | + | 90 | = |
|
| 6. | 890 | + | 10 | = |
|
| 7. | 780 | + | 20 | = |
|
| 8. | 870 | + | 30 | = |
|
| 9. | 430 | + | 70 | = |
|
| 10. | 880 | + | 20 | = |
|