Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 250 | + | 50 | = |
|
| 2. | 190 | + | 10 | = |
|
| 3. | 460 | + | 40 | = |
|
| 4. | 570 | + | 30 | = |
|
| 5. | 880 | + | 20 | = |
|
| 6. | 980 | + | 20 | = |
|
| 7. | 650 | + | 50 | = |
|
| 8. | 810 | + | 90 | = |
|
| 9. | 560 | + | 40 | = |
|
| 10. | 970 | + | 30 | = |
|
| Oefening 2 | |||||
| 1. | 680 | + | 20 | = |
|
| 2. | 350 | + | 50 | = |
|
| 3. | 870 | + | 30 | = |
|
| 4. | 110 | + | 90 | = |
|
| 5. | 310 | + | 90 | = |
|
| 6. | 860 | + | 40 | = |
|
| 7. | 360 | + | 40 | = |
|
| 8. | 210 | + | 90 | = |
|
| 9. | 830 | + | 70 | = |
|
| 10. | 950 | + | 50 | = |
|
| Oefening 3 | |||||
| 1. | 440 | + | 60 | = |
|
| 2. | 810 | + | 90 | = |
|
| 3. | 180 | + | 20 | = |
|
| 4. | 740 | + | 60 | = |
|
| 5. | 910 | + | 90 | = |
|
| 6. | 140 | + | 60 | = |
|
| 7. | 630 | + | 70 | = |
|
| 8. | 970 | + | 30 | = |
|
| 9. | 270 | + | 30 | = |
|
| 10. | 950 | + | 50 | = |
|
| Oefening 4 | |||||
| 1. | 770 | + | 30 | = |
|
| 2. | 970 | + | 30 | = |
|
| 3. | 860 | + | 40 | = |
|
| 4. | 350 | + | 50 | = |
|
| 5. | 110 | + | 90 | = |
|
| 6. | 260 | + | 40 | = |
|
| 7. | 860 | + | 40 | = |
|
| 8. | 650 | + | 50 | = |
|
| 9. | 620 | + | 80 | = |
|
| 10. | 940 | + | 60 | = |
|