Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 620 | + | 80 | = |
|
| 2. | 490 | + | 10 | = |
|
| 3. | 370 | + | 30 | = |
|
| 4. | 960 | + | 40 | = |
|
| 5. | 970 | + | 30 | = |
|
| 6. | 470 | + | 30 | = |
|
| 7. | 140 | + | 60 | = |
|
| 8. | 380 | + | 20 | = |
|
| 9. | 430 | + | 70 | = |
|
| 10. | 450 | + | 50 | = |
|
| Oefening 2 | |||||
| 1. | 990 | + | 10 | = |
|
| 2. | 980 | + | 20 | = |
|
| 3. | 770 | + | 30 | = |
|
| 4. | 470 | + | 30 | = |
|
| 5. | 710 | + | 90 | = |
|
| 6. | 230 | + | 70 | = |
|
| 7. | 440 | + | 60 | = |
|
| 8. | 530 | + | 70 | = |
|
| 9. | 710 | + | 90 | = |
|
| 10. | 710 | + | 90 | = |
|
| Oefening 3 | |||||
| 1. | 680 | + | 20 | = |
|
| 2. | 980 | + | 20 | = |
|
| 3. | 760 | + | 40 | = |
|
| 4. | 140 | + | 60 | = |
|
| 5. | 930 | + | 70 | = |
|
| 6. | 390 | + | 10 | = |
|
| 7. | 580 | + | 20 | = |
|
| 8. | 210 | + | 90 | = |
|
| 9. | 850 | + | 50 | = |
|
| 10. | 830 | + | 70 | = |
|
| Oefening 4 | |||||
| 1. | 390 | + | 10 | = |
|
| 2. | 960 | + | 40 | = |
|
| 3. | 910 | + | 90 | = |
|
| 4. | 680 | + | 20 | = |
|
| 5. | 410 | + | 90 | = |
|
| 6. | 680 | + | 20 | = |
|
| 7. | 340 | + | 60 | = |
|
| 8. | 150 | + | 50 | = |
|
| 9. | 930 | + | 70 | = |
|
| 10. | 960 | + | 40 | = |
|