| number | its square root | % Correct |
|---|---|---|
| 121 | 11 | 100%
|
| 169 | 13 | 100%
|
| 225 | 15 | 100%
|
| 400 | 20 | 100%
|
| 441 | 21 | 100%
|
| 625 | 25 | 100%
|
| 9 | 3 | 100%
|
| 49 | 7 | 100%
|
| 81 | 9 | 100%
|
| 961 | 31 | 97%
|
| 250000 | 500 | 86%
|
| 1440000 | 1200 | 75%
|
| 16000000 | 4000 | 72%
|
| 1002001 | 1001 | 56%
|
| 100040004 | 10002 | 45%
|