Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 950 | + | 50 | = |
|
| 2. | 420 | + | 80 | = |
|
| 3. | 490 | + | 10 | = |
|
| 4. | 710 | + | 90 | = |
|
| 5. | 430 | + | 70 | = |
|
| 6. | 260 | + | 40 | = |
|
| 7. | 270 | + | 30 | = |
|
| 8. | 390 | + | 10 | = |
|
| 9. | 870 | + | 30 | = |
|
| 10. | 950 | + | 50 | = |
|
| Oefening 2 | |||||
| 1. | 620 | + | 80 | = |
|
| 2. | 660 | + | 40 | = |
|
| 3. | 750 | + | 50 | = |
|
| 4. | 160 | + | 40 | = |
|
| 5. | 850 | + | 50 | = |
|
| 6. | 280 | + | 20 | = |
|
| 7. | 920 | + | 80 | = |
|
| 8. | 730 | + | 70 | = |
|
| 9. | 750 | + | 50 | = |
|
| 10. | 670 | + | 30 | = |
|
| Oefening 3 | |||||
| 1. | 990 | + | 10 | = |
|
| 2. | 780 | + | 20 | = |
|
| 3. | 960 | + | 40 | = |
|
| 4. | 320 | + | 80 | = |
|
| 5. | 740 | + | 60 | = |
|
| 6. | 840 | + | 60 | = |
|
| 7. | 470 | + | 30 | = |
|
| 8. | 440 | + | 60 | = |
|
| 9. | 420 | + | 80 | = |
|
| 10. | 840 | + | 60 | = |
|
| Oefening 4 | |||||
| 1. | 880 | + | 20 | = |
|
| 2. | 310 | + | 90 | = |
|
| 3. | 350 | + | 50 | = |
|
| 4. | 170 | + | 30 | = |
|
| 5. | 780 | + | 20 | = |
|
| 6. | 210 | + | 90 | = |
|
| 7. | 410 | + | 90 | = |
|
| 8. | 180 | + | 20 | = |
|
| 9. | 140 | + | 60 | = |
|
| 10. | 280 | + | 20 | = |
|