Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 610 | + | 90 | = |
|
| 2. | 260 | + | 40 | = |
|
| 3. | 580 | + | 20 | = |
|
| 4. | 920 | + | 80 | = |
|
| 5. | 550 | + | 50 | = |
|
| 6. | 710 | + | 90 | = |
|
| 7. | 470 | + | 30 | = |
|
| 8. | 170 | + | 30 | = |
|
| 9. | 870 | + | 30 | = |
|
| 10. | 670 | + | 30 | = |
|
| Oefening 2 | |||||
| 1. | 750 | + | 50 | = |
|
| 2. | 950 | + | 50 | = |
|
| 3. | 470 | + | 30 | = |
|
| 4. | 720 | + | 80 | = |
|
| 5. | 470 | + | 30 | = |
|
| 6. | 970 | + | 30 | = |
|
| 7. | 770 | + | 30 | = |
|
| 8. | 330 | + | 70 | = |
|
| 9. | 370 | + | 30 | = |
|
| 10. | 540 | + | 60 | = |
|
| Oefening 3 | |||||
| 1. | 640 | + | 60 | = |
|
| 2. | 890 | + | 10 | = |
|
| 3. | 610 | + | 90 | = |
|
| 4. | 960 | + | 40 | = |
|
| 5. | 840 | + | 60 | = |
|
| 6. | 280 | + | 20 | = |
|
| 7. | 890 | + | 10 | = |
|
| 8. | 110 | + | 90 | = |
|
| 9. | 530 | + | 70 | = |
|
| 10. | 110 | + | 90 | = |
|
| Oefening 4 | |||||
| 1. | 970 | + | 30 | = |
|
| 2. | 240 | + | 60 | = |
|
| 3. | 620 | + | 80 | = |
|
| 4. | 180 | + | 20 | = |
|
| 5. | 360 | + | 40 | = |
|
| 6. | 860 | + | 40 | = |
|
| 7. | 630 | + | 70 | = |
|
| 8. | 690 | + | 10 | = |
|
| 9. | 310 | + | 90 | = |
|
| 10. | 780 | + | 20 | = |
|