Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 270 | + | 30 | = |
|
| 2. | 440 | + | 60 | = |
|
| 3. | 310 | + | 90 | = |
|
| 4. | 590 | + | 10 | = |
|
| 5. | 880 | + | 20 | = |
|
| 6. | 410 | + | 90 | = |
|
| 7. | 110 | + | 90 | = |
|
| 8. | 540 | + | 60 | = |
|
| 9. | 220 | + | 80 | = |
|
| 10. | 720 | + | 80 | = |
|
| Oefening 2 | |||||
| 1. | 870 | + | 30 | = |
|
| 2. | 340 | + | 60 | = |
|
| 3. | 590 | + | 10 | = |
|
| 4. | 960 | + | 40 | = |
|
| 5. | 170 | + | 30 | = |
|
| 6. | 230 | + | 70 | = |
|
| 7. | 190 | + | 10 | = |
|
| 8. | 720 | + | 80 | = |
|
| 9. | 370 | + | 30 | = |
|
| 10. | 420 | + | 80 | = |
|
| Oefening 3 | |||||
| 1. | 440 | + | 60 | = |
|
| 2. | 660 | + | 40 | = |
|
| 3. | 560 | + | 40 | = |
|
| 4. | 680 | + | 20 | = |
|
| 5. | 670 | + | 30 | = |
|
| 6. | 570 | + | 30 | = |
|
| 7. | 410 | + | 90 | = |
|
| 8. | 960 | + | 40 | = |
|
| 9. | 240 | + | 60 | = |
|
| 10. | 350 | + | 50 | = |
|
| Oefening 4 | |||||
| 1. | 110 | + | 90 | = |
|
| 2. | 250 | + | 50 | = |
|
| 3. | 870 | + | 30 | = |
|
| 4. | 170 | + | 30 | = |
|
| 5. | 330 | + | 70 | = |
|
| 6. | 460 | + | 40 | = |
|
| 7. | 420 | + | 80 | = |
|
| 8. | 510 | + | 90 | = |
|
| 9. | 370 | + | 30 | = |
|
| 10. | 880 | + | 20 | = |
|