Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 910 | + | 90 | = |
|
| 2. | 370 | + | 30 | = |
|
| 3. | 940 | + | 60 | = |
|
| 4. | 420 | + | 80 | = |
|
| 5. | 280 | + | 20 | = |
|
| 6. | 860 | + | 40 | = |
|
| 7. | 840 | + | 60 | = |
|
| 8. | 420 | + | 80 | = |
|
| 9. | 730 | + | 70 | = |
|
| 10. | 460 | + | 40 | = |
|
| Oefening 2 | |||||
| 1. | 450 | + | 50 | = |
|
| 2. | 260 | + | 40 | = |
|
| 3. | 170 | + | 30 | = |
|
| 4. | 780 | + | 20 | = |
|
| 5. | 340 | + | 60 | = |
|
| 6. | 480 | + | 20 | = |
|
| 7. | 110 | + | 90 | = |
|
| 8. | 760 | + | 40 | = |
|
| 9. | 160 | + | 40 | = |
|
| 10. | 330 | + | 70 | = |
|
| Oefening 3 | |||||
| 1. | 190 | + | 10 | = |
|
| 2. | 930 | + | 70 | = |
|
| 3. | 460 | + | 40 | = |
|
| 4. | 460 | + | 40 | = |
|
| 5. | 690 | + | 10 | = |
|
| 6. | 230 | + | 70 | = |
|
| 7. | 190 | + | 10 | = |
|
| 8. | 830 | + | 70 | = |
|
| 9. | 330 | + | 70 | = |
|
| 10. | 530 | + | 70 | = |
|
| Oefening 4 | |||||
| 1. | 450 | + | 50 | = |
|
| 2. | 540 | + | 60 | = |
|
| 3. | 510 | + | 90 | = |
|
| 4. | 980 | + | 20 | = |
|
| 5. | 110 | + | 90 | = |
|
| 6. | 360 | + | 40 | = |
|
| 7. | 210 | + | 90 | = |
|
| 8. | 660 | + | 40 | = |
|
| 9. | 130 | + | 70 | = |
|
| 10. | 630 | + | 70 | = |
|