Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 460 | + | 40 | = |
|
| 2. | 880 | + | 20 | = |
|
| 3. | 340 | + | 60 | = |
|
| 4. | 890 | + | 10 | = |
|
| 5. | 880 | + | 20 | = |
|
| 6. | 670 | + | 30 | = |
|
| 7. | 790 | + | 10 | = |
|
| 8. | 960 | + | 40 | = |
|
| 9. | 580 | + | 20 | = |
|
| 10. | 930 | + | 70 | = |
|
| Oefening 2 | |||||
| 1. | 160 | + | 40 | = |
|
| 2. | 540 | + | 60 | = |
|
| 3. | 750 | + | 50 | = |
|
| 4. | 640 | + | 60 | = |
|
| 5. | 510 | + | 90 | = |
|
| 6. | 270 | + | 30 | = |
|
| 7. | 830 | + | 70 | = |
|
| 8. | 220 | + | 80 | = |
|
| 9. | 420 | + | 80 | = |
|
| 10. | 330 | + | 70 | = |
|
| Oefening 3 | |||||
| 1. | 910 | + | 90 | = |
|
| 2. | 880 | + | 20 | = |
|
| 3. | 990 | + | 10 | = |
|
| 4. | 160 | + | 40 | = |
|
| 5. | 450 | + | 50 | = |
|
| 6. | 140 | + | 60 | = |
|
| 7. | 860 | + | 40 | = |
|
| 8. | 910 | + | 90 | = |
|
| 9. | 290 | + | 10 | = |
|
| 10. | 160 | + | 40 | = |
|
| Oefening 4 | |||||
| 1. | 830 | + | 70 | = |
|
| 2. | 310 | + | 90 | = |
|
| 3. | 650 | + | 50 | = |
|
| 4. | 910 | + | 90 | = |
|
| 5. | 720 | + | 80 | = |
|
| 6. | 590 | + | 10 | = |
|
| 7. | 920 | + | 80 | = |
|
| 8. | 120 | + | 80 | = |
|
| 9. | 670 | + | 30 | = |
|
| 10. | 520 | + | 80 | = |
|