| 100% | KMART | 5 | The first one opened in Garden City, Mich., in 1962 |
| 64% | KMART | 5 | The first one opened in Detroit in 1962 |
| 51% | COUCHGAG | 8 | The first one appeared in the opening sequence for "Bart the Genius" |
| 47% | YMCA | 4 | The first US one opened in Boston in 1851 |
| 47% | LETCHWORTH | 10 | Town in Hertfordshire founded in 1903 as the first garden city in England |
| 43% | UTICA | 5 | New York city where the first "Woolworth's Great Five Cent Store" opened in 1879 |
| 43% | ALMANAC | 7 | The first one printed in America was in 1639 |
| 42% | PLANE | 5 | Commercial aircraft; the first one flew in 1903 |
| 42% | CAN | 3 | Warhol painted one of these 32 times for his first one-man gallery exhibition in the Ferus Gallery in 1962 |
| 42% | RAILWAY | 7 | The Trans-Siberian one opened in 1904 |
| 42% | HBOMB | 5 | The first one went off in 1952 |
| 42% | TEDTALK | 7 | The first one was delivered in 1984 |
| 42% | EMAIL | 5 | The first one was sent in 1971 |
| 42% | ROME | 4 | First city to reach a population of one million people, in the second century B.C. |
| 41% | WORD | 4 | The first one in this clue is "The" |
| 41% | BROWSERWAR | 10 | Navigator was in the first one |
| 41% | BLOOM | 5 | Open in the garden |
| 41% | SSN | 3 | The first one was issued in 1936, for short |
| 40% | WORLDSFAIR | 10 | London had the first one in 1851 |
| 40% | OLYMPICS | 8 | The first modern one was held in Athens in 1896 |
| 40% | ALOHABOWL | 9 | The University of Washington won the first one in 1982 |
| 40% | RABBI | 5 | The first ordained female one was Regina Jonas in 1935 |
| 40% | OLYMPIC | 7 | The first modern one of these games was in Greece |
| 40% | STATEPARK | 9 | Niagara Reservation was the first one in 1885 |
| 40% | PEACHBOWL | 9 | Louisiana State won the first one in 1968 |
| 40% | ADAM | 4 | One there in the first place |
| 40% | JET | 3 | The Lippisch Ente was the first one of these to fly, in 1928 |
| 40% | OPED | 4 | The first one in The New York Times appeared in 1970 |
| 39% | ZERO | 4 | Any digit in a googol after the first one |
| 39% | CRUSADE | 7 | Pope Urban II launched the first one in 1095 |