Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 790 | + | 10 | = |
|
| 2. | 150 | + | 50 | = |
|
| 3. | 820 | + | 80 | = |
|
| 4. | 180 | + | 20 | = |
|
| 5. | 370 | + | 30 | = |
|
| 6. | 350 | + | 50 | = |
|
| 7. | 730 | + | 70 | = |
|
| 8. | 640 | + | 60 | = |
|
| 9. | 640 | + | 60 | = |
|
| 10. | 810 | + | 90 | = |
|
| Oefening 2 | |||||
| 1. | 720 | + | 80 | = |
|
| 2. | 110 | + | 90 | = |
|
| 3. | 240 | + | 60 | = |
|
| 4. | 590 | + | 10 | = |
|
| 5. | 880 | + | 20 | = |
|
| 6. | 210 | + | 90 | = |
|
| 7. | 640 | + | 60 | = |
|
| 8. | 390 | + | 10 | = |
|
| 9. | 990 | + | 10 | = |
|
| 10. | 920 | + | 80 | = |
|
| Oefening 3 | |||||
| 1. | 420 | + | 80 | = |
|
| 2. | 340 | + | 60 | = |
|
| 3. | 490 | + | 10 | = |
|
| 4. | 770 | + | 30 | = |
|
| 5. | 650 | + | 50 | = |
|
| 6. | 950 | + | 50 | = |
|
| 7. | 420 | + | 80 | = |
|
| 8. | 680 | + | 20 | = |
|
| 9. | 170 | + | 30 | = |
|
| 10. | 240 | + | 60 | = |
|
| Oefening 4 | |||||
| 1. | 310 | + | 90 | = |
|
| 2. | 770 | + | 30 | = |
|
| 3. | 690 | + | 10 | = |
|
| 4. | 890 | + | 10 | = |
|
| 5. | 690 | + | 10 | = |
|
| 6. | 560 | + | 40 | = |
|
| 7. | 180 | + | 20 | = |
|
| 8. | 210 | + | 90 | = |
|
| 9. | 580 | + | 20 | = |
|
| 10. | 690 | + | 10 | = |
|