Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 350 | + | 50 | = |
|
| 2. | 640 | + | 60 | = |
|
| 3. | 670 | + | 30 | = |
|
| 4. | 910 | + | 90 | = |
|
| 5. | 210 | + | 90 | = |
|
| 6. | 970 | + | 30 | = |
|
| 7. | 280 | + | 20 | = |
|
| 8. | 990 | + | 10 | = |
|
| 9. | 260 | + | 40 | = |
|
| 10. | 580 | + | 20 | = |
|
| Oefening 2 | |||||
| 1. | 950 | + | 50 | = |
|
| 2. | 160 | + | 40 | = |
|
| 3. | 540 | + | 60 | = |
|
| 4. | 490 | + | 10 | = |
|
| 5. | 330 | + | 70 | = |
|
| 6. | 620 | + | 80 | = |
|
| 7. | 760 | + | 40 | = |
|
| 8. | 280 | + | 20 | = |
|
| 9. | 310 | + | 90 | = |
|
| 10. | 940 | + | 60 | = |
|
| Oefening 3 | |||||
| 1. | 160 | + | 40 | = |
|
| 2. | 970 | + | 30 | = |
|
| 3. | 340 | + | 60 | = |
|
| 4. | 620 | + | 80 | = |
|
| 5. | 850 | + | 50 | = |
|
| 6. | 870 | + | 30 | = |
|
| 7. | 680 | + | 20 | = |
|
| 8. | 490 | + | 10 | = |
|
| 9. | 130 | + | 70 | = |
|
| 10. | 880 | + | 20 | = |
|
| Oefening 4 | |||||
| 1. | 250 | + | 50 | = |
|
| 2. | 910 | + | 90 | = |
|
| 3. | 210 | + | 90 | = |
|
| 4. | 970 | + | 30 | = |
|
| 5. | 770 | + | 30 | = |
|
| 6. | 290 | + | 10 | = |
|
| 7. | 610 | + | 90 | = |
|
| 8. | 320 | + | 80 | = |
|
| 9. | 260 | + | 40 | = |
|
| 10. | 760 | + | 40 | = |
|