| Soustraction | Réponse | % Correct |
|---|---|---|
| 9999-9999 | 0 | 97%
|
| 1-1 | 0 | 97%
|
| 1000-500 | 500 | 96%
|
| 10-1 | 9 | 96%
|
| 20-19 | 1 | 95%
|
| 100-97 | 3 | 94%
|
| 2-1 | 1 | 93%
|
| 89-9 | 80 | 93%
|
| 9-5 | 4 | 92%
|
| 788562-2 | 788560 | 92%
|
| 9587894156-1 | 9587894155 | 91%
|
| 63-23 | 40 | 90%
|
| 10 045- 9 045 | 1000 | 87%
|
| 6 789-1 111 | 5 678 | 87%
|
| 800-789 | 11 | 85%
|
| 60 562-60 001 | 561 | 85%
|