| Problem | Equals | % Correct |
|---|---|---|
| - 3 | 3 | 100%
|
| 2 + 4 | 6 | 100%
|
| - 13 | 12 | 99%
|
| * 6 | 18 | 99%
|
| / 4 | 18 | 99%
|
| / 42 | 2 | 99%
|
| / 5 | 21 | 99%
|
| + 14 | 23 | 99%
|
| + 13 | 31 | 99%
|
| - 24 | 7 | 99%
|
| * 9 | 72 | 99%
|
| - 15 | 8 | 99%
|
| / 2 | 9 | 99%
|
| * 15 | 105 | 97%
|
| + 4 | 25 | 97%
|
| * 7 | 84 | 97%
|