Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 670 | + | 30 | = |
|
| 2. | 640 | + | 60 | = |
|
| 3. | 980 | + | 20 | = |
|
| 4. | 450 | + | 50 | = |
|
| 5. | 210 | + | 90 | = |
|
| 6. | 230 | + | 70 | = |
|
| 7. | 310 | + | 90 | = |
|
| 8. | 680 | + | 20 | = |
|
| 9. | 250 | + | 50 | = |
|
| 10. | 360 | + | 40 | = |
|
| Oefening 2 | |||||
| 1. | 720 | + | 80 | = |
|
| 2. | 290 | + | 10 | = |
|
| 3. | 650 | + | 50 | = |
|
| 4. | 110 | + | 90 | = |
|
| 5. | 830 | + | 70 | = |
|
| 6. | 790 | + | 10 | = |
|
| 7. | 410 | + | 90 | = |
|
| 8. | 290 | + | 10 | = |
|
| 9. | 180 | + | 20 | = |
|
| 10. | 580 | + | 20 | = |
|
| Oefening 3 | |||||
| 1. | 750 | + | 50 | = |
|
| 2. | 730 | + | 70 | = |
|
| 3. | 980 | + | 20 | = |
|
| 4. | 190 | + | 10 | = |
|
| 5. | 790 | + | 10 | = |
|
| 6. | 370 | + | 30 | = |
|
| 7. | 990 | + | 10 | = |
|
| 8. | 510 | + | 90 | = |
|
| 9. | 940 | + | 60 | = |
|
| 10. | 840 | + | 60 | = |
|
| Oefening 4 | |||||
| 1. | 540 | + | 60 | = |
|
| 2. | 870 | + | 30 | = |
|
| 3. | 390 | + | 10 | = |
|
| 4. | 930 | + | 70 | = |
|
| 5. | 580 | + | 20 | = |
|
| 6. | 220 | + | 80 | = |
|
| 7. | 790 | + | 10 | = |
|
| 8. | 890 | + | 10 | = |
|
| 9. | 290 | + | 10 | = |
|
| 10. | 610 | + | 90 | = |
|