Optellen van tientallen tot en met een honderdtal
Erbijsommen
| Oefening 1 | |||||
| 1. | 390 | + | 10 | = |
|
| 2. | 360 | + | 40 | = |
|
| 3. | 840 | + | 60 | = |
|
| 4. | 330 | + | 70 | = |
|
| 5. | 980 | + | 20 | = |
|
| 6. | 720 | + | 80 | = |
|
| 7. | 230 | + | 70 | = |
|
| 8. | 160 | + | 40 | = |
|
| 9. | 630 | + | 70 | = |
|
| 10. | 920 | + | 80 | = |
|
| Oefening 2 | |||||
| 1. | 640 | + | 60 | = |
|
| 2. | 740 | + | 60 | = |
|
| 3. | 390 | + | 10 | = |
|
| 4. | 280 | + | 20 | = |
|
| 5. | 570 | + | 30 | = |
|
| 6. | 250 | + | 50 | = |
|
| 7. | 890 | + | 10 | = |
|
| 8. | 620 | + | 80 | = |
|
| 9. | 320 | + | 80 | = |
|
| 10. | 220 | + | 80 | = |
|
| Oefening 3 | |||||
| 1. | 780 | + | 20 | = |
|
| 2. | 740 | + | 60 | = |
|
| 3. | 380 | + | 20 | = |
|
| 4. | 120 | + | 80 | = |
|
| 5. | 890 | + | 10 | = |
|
| 6. | 680 | + | 20 | = |
|
| 7. | 510 | + | 90 | = |
|
| 8. | 960 | + | 40 | = |
|
| 9. | 290 | + | 10 | = |
|
| 10. | 870 | + | 30 | = |
|
| Oefening 4 | |||||
| 1. | 830 | + | 70 | = |
|
| 2. | 680 | + | 20 | = |
|
| 3. | 810 | + | 90 | = |
|
| 4. | 910 | + | 90 | = |
|
| 5. | 820 | + | 80 | = |
|
| 6. | 110 | + | 90 | = |
|
| 7. | 330 | + | 70 | = |
|
| 8. | 510 | + | 90 | = |
|
| 9. | 880 | + | 20 | = |
|
| 10. | 660 | + | 40 | = |
|