| Cálculo | Respuesta | % Correcto |
|---|---|---|
| ... / 2 | 17 | 100%
|
| ... + 55 | 72 | 92%
|
| ... + 57 | 129 | 88%
|
| ... - 17 | 13 | 78%
|
| ... / 3 | 43 | 77%
|
| ... + 77 | 120 | 73%
|
| ... / 4 | 30 | 73%
|
| ... x 6 | 78 | 70%
|
| ... + 14 | 92 | 63%
|
| ... / 4 | 23 | 52%
|