Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 580 | + | 20 | = |
|
| 2. | 770 | + | 30 | = |
|
| 3. | 710 | + | 90 | = |
|
| 4. | 260 | + | 40 | = |
|
| 5. | 760 | + | 40 | = |
|
| 6. | 560 | + | 40 | = |
|
| 7. | 630 | + | 70 | = |
|
| 8. | 160 | + | 40 | = |
|
| 9. | 210 | + | 90 | = |
|
| 10. | 250 | + | 50 | = |
|
| Oefening 2 | |||||
| 1. | 790 | + | 10 | = |
|
| 2. | 980 | + | 20 | = |
|
| 3. | 750 | + | 50 | = |
|
| 4. | 820 | + | 80 | = |
|
| 5. | 920 | + | 80 | = |
|
| 6. | 390 | + | 10 | = |
|
| 7. | 670 | + | 30 | = |
|
| 8. | 880 | + | 20 | = |
|
| 9. | 910 | + | 90 | = |
|
| 10. | 690 | + | 10 | = |
|
| Oefening 3 | |||||
| 1. | 630 | + | 70 | = |
|
| 2. | 770 | + | 30 | = |
|
| 3. | 480 | + | 20 | = |
|
| 4. | 980 | + | 20 | = |
|
| 5. | 290 | + | 10 | = |
|
| 6. | 130 | + | 70 | = |
|
| 7. | 790 | + | 10 | = |
|
| 8. | 790 | + | 10 | = |
|
| 9. | 510 | + | 90 | = |
|
| 10. | 370 | + | 30 | = |
|
| Oefening 4 | |||||
| 1. | 730 | + | 70 | = |
|
| 2. | 170 | + | 30 | = |
|
| 3. | 770 | + | 30 | = |
|
| 4. | 740 | + | 60 | = |
|
| 5. | 830 | + | 70 | = |
|
| 6. | 690 | + | 10 | = |
|
| 7. | 270 | + | 30 | = |
|
| 8. | 490 | + | 10 | = |
|
| 9. | 810 | + | 90 | = |
|
| 10. | 370 | + | 30 | = |
|