| 100% | ASPURE | 6 | Having the same number of karats, e.g. |
| 65% | ISOMEROUS | 9 | Having the same number of parts, in biology |
| 64% | ISOTONES | 8 | Atoms that have the same number of neutrons |
| 61% | BOISE | 5 | State capital that has the same number of letters as its state |
| 55% | AGREE | 5 | Have the same tense, e.g. |
| 55% | AGREE | 5 | Have the same case, e.g. |
| 53% | EXCHANGERATE | 12 | Number of euros to the dollar, e.g. |
| 51% | ERROR | 5 | Writing the same number twice in a sudoku row, e.g. |
| 51% | ISOTOPES | 8 | Atoms with the same number of protons |
| 49% | TIE | 3 | Result when two teams score the same number of points |
| 48% | ISOTONE | 7 | One of a group of atoms having the same number of neutrons but a different number of protons |
| 48% | ISOMER | 6 | Compound with the same number of atoms in a different arrangement |
| 48% | COINCIDE | 8 | Happen at the same time, e.g. a crossover of plans |
| 48% | ISOTONIC | 8 | Having the same concentration of salt as mammalian blood |
| 47% | FIVE | 4 | Number of sides the Pentagon has |
| 47% | ONE | 3 | Number of moons the Earth has |
| 47% | FIVE | 4 | Number of singers the Backstreet Boys have |
| 46% | INDONESIA | 9 | It has the largest number of active volcanoes |
| 44% | TWO | 3 | Number of times the Twins have won the World Series, appropriately |
| 44% | ZEROS | 5 | The number 500 has two of them |
| 44% | TEN | 3 | The number of toes most people have |
| 44% | CSHARP | 6 | The key of E major has one |
| 44% | ONCE | 4 | Number of times spacecraft have visited the area of the planet Neptune |
| 43% | ECRU | 4 | Hue that has the ISCC-NBS color number of 89 |
| 43% | MEANINGS | 8 | The word "set" has the largest number of those |
| 43% | GREENBACK | 9 | Dollar bill, e.g. ... and what the ends of the answers to starred clues have in common |
| 43% | TWO | 3 | Number of times Michael Schumacher has won the Laureus Sportsman of the year |
| 43% | FOUR | 4 | Only number with the same number of letters as its value |
| 43% | EIGHT | 5 | Number of countries you'll have to find before finding the contest answer |
| 43% | EXPANSION | 9 | Increase in the number of teams in a league, e.g. |