| Vraag | Antwoord |
|---|---|
| 7 + 10 | 17 |
| 9 + 7 | 16 |
| 7 + 9 | 16 |
| 9 + 11 | 20 |
| 6 + 7 | 13 |
| 9 + 9 | 18 |
| 9 + 10 | 19 |
| 10 + 6 | 16 |
| 5 + 11 | 16 |
| 5 + 8 | 13 |
| 8 + 12 | 20 |
| 5 + 12 | 17 |
| 7 + 12 | 19 |
| 10 + 9 | 19 |
| 8 + 7 | 15 |
Optelsommen binnen 5–20.
| Vraag | Antwoord |
|---|---|
| 7 + 10 | 17 |
| 9 + 7 | 16 |
| 7 + 9 | 16 |
| 9 + 11 | 20 |
| 6 + 7 | 13 |
| 9 + 9 | 18 |
| 9 + 10 | 19 |
| 10 + 6 | 16 |
| 5 + 11 | 16 |
| 5 + 8 | 13 |
| 8 + 12 | 20 |
| 5 + 12 | 17 |
| 7 + 12 | 19 |
| 10 + 9 | 19 |
| 8 + 7 | 15 |