Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 470 | + | 30 | = |
|
| 2. | 880 | + | 20 | = |
|
| 3. | 380 | + | 20 | = |
|
| 4. | 480 | + | 20 | = |
|
| 5. | 130 | + | 70 | = |
|
| 6. | 250 | + | 50 | = |
|
| 7. | 870 | + | 30 | = |
|
| 8. | 370 | + | 30 | = |
|
| 9. | 740 | + | 60 | = |
|
| 10. | 740 | + | 60 | = |
|
| Oefening 2 | |||||
| 1. | 830 | + | 70 | = |
|
| 2. | 550 | + | 50 | = |
|
| 3. | 470 | + | 30 | = |
|
| 4. | 840 | + | 60 | = |
|
| 5. | 730 | + | 70 | = |
|
| 6. | 320 | + | 80 | = |
|
| 7. | 550 | + | 50 | = |
|
| 8. | 480 | + | 20 | = |
|
| 9. | 420 | + | 80 | = |
|
| 10. | 520 | + | 80 | = |
|
| Oefening 3 | |||||
| 1. | 310 | + | 90 | = |
|
| 2. | 140 | + | 60 | = |
|
| 3. | 510 | + | 90 | = |
|
| 4. | 370 | + | 30 | = |
|
| 5. | 160 | + | 40 | = |
|
| 6. | 460 | + | 40 | = |
|
| 7. | 990 | + | 10 | = |
|
| 8. | 440 | + | 60 | = |
|
| 9. | 320 | + | 80 | = |
|
| 10. | 750 | + | 50 | = |
|
| Oefening 4 | |||||
| 1. | 350 | + | 50 | = |
|
| 2. | 310 | + | 90 | = |
|
| 3. | 390 | + | 10 | = |
|
| 4. | 560 | + | 40 | = |
|
| 5. | 840 | + | 60 | = |
|
| 6. | 390 | + | 10 | = |
|
| 7. | 860 | + | 40 | = |
|
| 8. | 680 | + | 20 | = |
|
| 9. | 760 | + | 40 | = |
|
| 10. | 940 | + | 60 | = |
|