| Problem | Simplest Form | % Correct |
|---|---|---|
| 28 + 89 | 117 | 100%
|
| 75 x 20 | 1,500 | 92%
|
| 88 + 279 | 367 | 87%
|
| 649 - 75 | 574 | 87%
|
| 604 + 76 | 680 | 87%
|
| 234 - 56 | 178 | 86%
|
| 498 - 324 | 174 | 85%
|
| 968 - 356 | 612 | 83%
|
| 625 + 324 | 949 | 83%
|
| 846 x 5 | 4,230 | 79%
|
| 265 x 3 | 795 | 79%
|
| 372 ÷ 4 | 93 | 75%
|
| √ 1024 | 32 | 73%
|
| 76 x 8 | 608 | 73%
|
| 2 ^ 12 | 4,096 | 72%
|
| √ 4096 | 64 | 67%
|
| 2(256x) | 512x | 63%
|
| 23 x 32 | 736 | 60%
|
| 9,999 x 9 | 89,991 | 60%
|
| 8,120 - 2,358 | 5,762 | 56%
|
| 256x / 16 | 16x | 47%
|
| 7,660 - 3,794 | 3,866 | 42%
|
| 58923 ÷ 3 | 19,641 | 40%
|
| 28 x 27 | 756 | 40%
|
| (434 x ^ 2) / 14x | 31x | 25%
|