| 100% | OCTAL | 5 | Like the base-8 number system |
| 65% | TEN | 3 | Base number of the decimal system |
| 64% | LUCKY | 5 | Like the number 8, to the Chinese |
| 64% | EVEN | 4 | Like the numbers 6, 8, and 14 |
| 64% | CUBIC | 5 | Like the numbers 8, 27 and 64 |
| 63% | EVEN | 4 | Like the numbers 2, 4, 6, and 8 |
| 62% | RADIX | 5 | 10, for the base 10 number system |
| 61% | TEN | 3 | Number the decimal system is based on |
| 61% | BACKWARD | 8 | In reverse order, like the numbers 9, 8, 7... |
| 60% | TEN | 3 | Number on which the decimal system is based |
| 60% | TEN | 3 | Number that the metric system is based on |
| 60% | TEN | 3 | Number that the decimal system is based on |
| 55% | TEN | 3 | Number that's the base of the decimal system |
| 53% | TEN | 3 | Number system base |
| 52% | ODD | 3 | Like the number 5 |
| 52% | ODD | 3 | Like the number 2021 |
| 52% | PRIME | 5 | Like the number 17 |
| 52% | PRIME | 5 | Like the number 23 |
| 52% | PRIME | 5 | Like the number 19 |
| 51% | NONREAL | 7 | Like the number i, mathematically |
| 51% | BASETWENTY | 10 | Like the Kaktovik numeral system |
| 51% | SAMOAN | 6 | Like the fa'amatai system |
| 50% | OCTAL | 5 | Like a certain computer number system |
| 50% | BASESIXTY | 9 | Number system used by the Babylonians |
| 50% | OCTAL | 5 | Like some early computer number systems |
| 50% | ONED | 4 | Like the number line, in brief |
| 50% | ODD | 3 | Like the number of this clue |
| 50% | PRIME | 5 | Like the number of this clue |
| 50% | VENOUS | 6 | Like part of the circulatory system |
| 50% | UPMOST | 6 | Like Brahmins in the caste system |