| Problem | Answer | % Correct |
|---|---|---|
| 49 - 5 = | 44 | 100%
|
| 26 - 5 = | 21 | 99%
|
| 44 - 14 = | 30 | 99%
|
| 38 - 5 = | 33 | 99%
|
| 45 - 8 = | 37 | 99%
|
| 50 - 9 = | 41 | 99%
|
| 50 - 0 = | 50 | 99%
|
| 25 - 19 = | 6 | 99%
|
| 27 - 18 = | 9 | 99%
|
| 40 - 12 = | 28 | 98%
|