Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 680 | + | 20 | = |
|
| 2. | 550 | + | 50 | = |
|
| 3. | 430 | + | 70 | = |
|
| 4. | 940 | + | 60 | = |
|
| 5. | 490 | + | 10 | = |
|
| 6. | 480 | + | 20 | = |
|
| 7. | 850 | + | 50 | = |
|
| 8. | 160 | + | 40 | = |
|
| 9. | 720 | + | 80 | = |
|
| 10. | 560 | + | 40 | = |
|
| Oefening 2 | |||||
| 1. | 860 | + | 40 | = |
|
| 2. | 520 | + | 80 | = |
|
| 3. | 610 | + | 90 | = |
|
| 4. | 910 | + | 90 | = |
|
| 5. | 310 | + | 90 | = |
|
| 6. | 120 | + | 80 | = |
|
| 7. | 330 | + | 70 | = |
|
| 8. | 930 | + | 70 | = |
|
| 9. | 640 | + | 60 | = |
|
| 10. | 380 | + | 20 | = |
|
| Oefening 3 | |||||
| 1. | 650 | + | 50 | = |
|
| 2. | 270 | + | 30 | = |
|
| 3. | 350 | + | 50 | = |
|
| 4. | 780 | + | 20 | = |
|
| 5. | 460 | + | 40 | = |
|
| 6. | 220 | + | 80 | = |
|
| 7. | 620 | + | 80 | = |
|
| 8. | 150 | + | 50 | = |
|
| 9. | 210 | + | 90 | = |
|
| 10. | 230 | + | 70 | = |
|
| Oefening 4 | |||||
| 1. | 540 | + | 60 | = |
|
| 2. | 860 | + | 40 | = |
|
| 3. | 220 | + | 80 | = |
|
| 4. | 440 | + | 60 | = |
|
| 5. | 860 | + | 40 | = |
|
| 6. | 490 | + | 10 | = |
|
| 7. | 520 | + | 80 | = |
|
| 8. | 680 | + | 20 | = |
|
| 9. | 640 | + | 60 | = |
|
| 10. | 740 | + | 60 | = |
|