| Problem | Solution | % Correct |
|---|---|---|
| 10 x 2 | 20 | 100%
|
| 4 x 5 | 20 | 97%
|
| 31 x 3 | 93 | 93%
|
| 69 x 2 | 138 | 92%
|
| 33 x 0 | 0 | 89%
|
| 20 x 20 | 400 | 89%
|
| 44 x 20 | 880 | 85%
|
| 59 x 2 | 118 | 84%
|
| 21 + 52 x 2 | 125 | 84%
|
| 210 x 2 + 52 | 472 | 75%
|