Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 590 | + | 10 | = |
|
| 2. | 470 | + | 30 | = |
|
| 3. | 570 | + | 30 | = |
|
| 4. | 770 | + | 30 | = |
|
| 5. | 620 | + | 80 | = |
|
| 6. | 650 | + | 50 | = |
|
| 7. | 570 | + | 30 | = |
|
| 8. | 620 | + | 80 | = |
|
| 9. | 960 | + | 40 | = |
|
| 10. | 190 | + | 10 | = |
|
| Oefening 2 | |||||
| 1. | 770 | + | 30 | = |
|
| 2. | 710 | + | 90 | = |
|
| 3. | 470 | + | 30 | = |
|
| 4. | 250 | + | 50 | = |
|
| 5. | 730 | + | 70 | = |
|
| 6. | 270 | + | 30 | = |
|
| 7. | 160 | + | 40 | = |
|
| 8. | 530 | + | 70 | = |
|
| 9. | 720 | + | 80 | = |
|
| 10. | 230 | + | 70 | = |
|
| Oefening 3 | |||||
| 1. | 140 | + | 60 | = |
|
| 2. | 580 | + | 20 | = |
|
| 3. | 110 | + | 90 | = |
|
| 4. | 330 | + | 70 | = |
|
| 5. | 870 | + | 30 | = |
|
| 6. | 880 | + | 20 | = |
|
| 7. | 540 | + | 60 | = |
|
| 8. | 260 | + | 40 | = |
|
| 9. | 480 | + | 20 | = |
|
| 10. | 330 | + | 70 | = |
|
| Oefening 4 | |||||
| 1. | 370 | + | 30 | = |
|
| 2. | 970 | + | 30 | = |
|
| 3. | 620 | + | 80 | = |
|
| 4. | 350 | + | 50 | = |
|
| 5. | 790 | + | 10 | = |
|
| 6. | 380 | + | 20 | = |
|
| 7. | 470 | + | 30 | = |
|
| 8. | 250 | + | 50 | = |
|
| 9. | 920 | + | 80 | = |
|
| 10. | 590 | + | 10 | = |
|