Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 420 | + | 80 | = |
|
| 2. | 940 | + | 60 | = |
|
| 3. | 620 | + | 80 | = |
|
| 4. | 510 | + | 90 | = |
|
| 5. | 530 | + | 70 | = |
|
| 6. | 670 | + | 30 | = |
|
| 7. | 240 | + | 60 | = |
|
| 8. | 630 | + | 70 | = |
|
| 9. | 790 | + | 10 | = |
|
| 10. | 870 | + | 30 | = |
|
| Oefening 2 | |||||
| 1. | 410 | + | 90 | = |
|
| 2. | 210 | + | 90 | = |
|
| 3. | 540 | + | 60 | = |
|
| 4. | 770 | + | 30 | = |
|
| 5. | 120 | + | 80 | = |
|
| 6. | 390 | + | 10 | = |
|
| 7. | 890 | + | 10 | = |
|
| 8. | 710 | + | 90 | = |
|
| 9. | 990 | + | 10 | = |
|
| 10. | 540 | + | 60 | = |
|
| Oefening 3 | |||||
| 1. | 170 | + | 30 | = |
|
| 2. | 170 | + | 30 | = |
|
| 3. | 150 | + | 50 | = |
|
| 4. | 560 | + | 40 | = |
|
| 5. | 930 | + | 70 | = |
|
| 6. | 950 | + | 50 | = |
|
| 7. | 420 | + | 80 | = |
|
| 8. | 630 | + | 70 | = |
|
| 9. | 680 | + | 20 | = |
|
| 10. | 910 | + | 90 | = |
|
| Oefening 4 | |||||
| 1. | 940 | + | 60 | = |
|
| 2. | 180 | + | 20 | = |
|
| 3. | 710 | + | 90 | = |
|
| 4. | 460 | + | 40 | = |
|
| 5. | 550 | + | 50 | = |
|
| 6. | 360 | + | 40 | = |
|
| 7. | 970 | + | 30 | = |
|
| 8. | 440 | + | 60 | = |
|
| 9. | 490 | + | 10 | = |
|
| 10. | 830 | + | 70 | = |
|