Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 870 | + | 30 | = |
|
| 2. | 160 | + | 40 | = |
|
| 3. | 850 | + | 50 | = |
|
| 4. | 270 | + | 30 | = |
|
| 5. | 140 | + | 60 | = |
|
| 6. | 370 | + | 30 | = |
|
| 7. | 420 | + | 80 | = |
|
| 8. | 380 | + | 20 | = |
|
| 9. | 840 | + | 60 | = |
|
| 10. | 630 | + | 70 | = |
|
| Oefening 2 | |||||
| 1. | 370 | + | 30 | = |
|
| 2. | 710 | + | 90 | = |
|
| 3. | 840 | + | 60 | = |
|
| 4. | 560 | + | 40 | = |
|
| 5. | 810 | + | 90 | = |
|
| 6. | 130 | + | 70 | = |
|
| 7. | 350 | + | 50 | = |
|
| 8. | 930 | + | 70 | = |
|
| 9. | 160 | + | 40 | = |
|
| 10. | 960 | + | 40 | = |
|
| Oefening 3 | |||||
| 1. | 270 | + | 30 | = |
|
| 2. | 490 | + | 10 | = |
|
| 3. | 410 | + | 90 | = |
|
| 4. | 380 | + | 20 | = |
|
| 5. | 180 | + | 20 | = |
|
| 6. | 160 | + | 40 | = |
|
| 7. | 190 | + | 10 | = |
|
| 8. | 880 | + | 20 | = |
|
| 9. | 410 | + | 90 | = |
|
| 10. | 850 | + | 50 | = |
|
| Oefening 4 | |||||
| 1. | 880 | + | 20 | = |
|
| 2. | 930 | + | 70 | = |
|
| 3. | 470 | + | 30 | = |
|
| 4. | 960 | + | 40 | = |
|
| 5. | 740 | + | 60 | = |
|
| 6. | 140 | + | 60 | = |
|
| 7. | 470 | + | 30 | = |
|
| 8. | 950 | + | 50 | = |
|
| 9. | 780 | + | 20 | = |
|
| 10. | 890 | + | 10 | = |
|