Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 980 | + | 20 | = |
|
| 2. | 860 | + | 40 | = |
|
| 3. | 320 | + | 80 | = |
|
| 4. | 630 | + | 70 | = |
|
| 5. | 140 | + | 60 | = |
|
| 6. | 790 | + | 10 | = |
|
| 7. | 320 | + | 80 | = |
|
| 8. | 320 | + | 80 | = |
|
| 9. | 190 | + | 10 | = |
|
| 10. | 940 | + | 60 | = |
|
| Oefening 2 | |||||
| 1. | 790 | + | 10 | = |
|
| 2. | 650 | + | 50 | = |
|
| 3. | 540 | + | 60 | = |
|
| 4. | 670 | + | 30 | = |
|
| 5. | 240 | + | 60 | = |
|
| 6. | 530 | + | 70 | = |
|
| 7. | 550 | + | 50 | = |
|
| 8. | 830 | + | 70 | = |
|
| 9. | 730 | + | 70 | = |
|
| 10. | 480 | + | 20 | = |
|
| Oefening 3 | |||||
| 1. | 490 | + | 10 | = |
|
| 2. | 890 | + | 10 | = |
|
| 3. | 570 | + | 30 | = |
|
| 4. | 760 | + | 40 | = |
|
| 5. | 880 | + | 20 | = |
|
| 6. | 130 | + | 70 | = |
|
| 7. | 260 | + | 40 | = |
|
| 8. | 560 | + | 40 | = |
|
| 9. | 960 | + | 40 | = |
|
| 10. | 480 | + | 20 | = |
|
| Oefening 4 | |||||
| 1. | 390 | + | 10 | = |
|
| 2. | 860 | + | 40 | = |
|
| 3. | 110 | + | 90 | = |
|
| 4. | 380 | + | 20 | = |
|
| 5. | 980 | + | 20 | = |
|
| 6. | 960 | + | 40 | = |
|
| 7. | 910 | + | 90 | = |
|
| 8. | 240 | + | 60 | = |
|
| 9. | 730 | + | 70 | = |
|
| 10. | 720 | + | 80 | = |
|