| Operation | Number | % Correct |
|---|---|---|
| Add 13 | 21 | 100%
|
| Multiply by 4 | 84 | 98%
|
| Divide by 12 | 7 | 94%
|
| Add 10 | 17 | 93%
|
| Divide by itself | 1 | 91%
|
| Subtract 1 | 0 | 88%
|
| Add 4 | 4 | 87%
|
| Multiply by 6 | 24 | 84%
|
| Multiply by ⅛ | 3 | 69%
|
| Cube it | 27 | 56%
|