Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 170 | + | 30 | = |
|
| 2. | 420 | + | 80 | = |
|
| 3. | 910 | + | 90 | = |
|
| 4. | 470 | + | 30 | = |
|
| 5. | 290 | + | 10 | = |
|
| 6. | 120 | + | 80 | = |
|
| 7. | 530 | + | 70 | = |
|
| 8. | 560 | + | 40 | = |
|
| 9. | 760 | + | 40 | = |
|
| 10. | 290 | + | 10 | = |
|
| Oefening 2 | |||||
| 1. | 350 | + | 50 | = |
|
| 2. | 550 | + | 50 | = |
|
| 3. | 650 | + | 50 | = |
|
| 4. | 750 | + | 50 | = |
|
| 5. | 640 | + | 60 | = |
|
| 6. | 630 | + | 70 | = |
|
| 7. | 630 | + | 70 | = |
|
| 8. | 360 | + | 40 | = |
|
| 9. | 210 | + | 90 | = |
|
| 10. | 910 | + | 90 | = |
|
| Oefening 3 | |||||
| 1. | 750 | + | 50 | = |
|
| 2. | 970 | + | 30 | = |
|
| 3. | 320 | + | 80 | = |
|
| 4. | 350 | + | 50 | = |
|
| 5. | 880 | + | 20 | = |
|
| 6. | 890 | + | 10 | = |
|
| 7. | 210 | + | 90 | = |
|
| 8. | 430 | + | 70 | = |
|
| 9. | 540 | + | 60 | = |
|
| 10. | 310 | + | 90 | = |
|
| Oefening 4 | |||||
| 1. | 720 | + | 80 | = |
|
| 2. | 270 | + | 30 | = |
|
| 3. | 950 | + | 50 | = |
|
| 4. | 720 | + | 80 | = |
|
| 5. | 980 | + | 20 | = |
|
| 6. | 930 | + | 70 | = |
|
| 7. | 870 | + | 30 | = |
|
| 8. | 610 | + | 90 | = |
|
| 9. | 360 | + | 40 | = |
|
| 10. | 510 | + | 90 | = |
|