| 1-A resident, maybe | 19 |
| 1-A or 3-B, perh. | 17 |
| 1-800-USA-RAIL's answerer | 29 |
| 1-800-SEND ___ (apropos corp. number) | 37 |
| 1-800-GET-___ (phone number of a road-safety group) | 51 |
| 1-800-FLOWERS rival | 19 |
| 1-800-FLOWERS alternative | 25 |
| 1-800-CALL-___ | 14 |
| 1-800-CALL-__: rival of 1-800-COLLECT | 37 |
| 1-5 and 1-10, e.g. | 18 |
| 1-2-3 software company | 22 |
| 1-2-3 dance | 11 |
| 1-15-6-11-5-22 | 14 |
| 1-1/2 rotation jumps | 20 |
| 1-1, for one | 12 |
| 1-1, e.g. | 9 |
| 1-1 score, for one | 18 |
| 1-1 score, e.g. | 15 |
| 1-1 or 2-2, e.g. | 16 |
| 1-1 and 7-7 | 11 |
| 1,852 meters | 12 |
| 1,760-yard racer | 16 |
| 1,760 yds. | 10 |
| 1,760 yards | 11 |
| 1,760 make a mi. | 16 |
| 1,728 | 5 |
| 1,620 yards, in Old Rome | 24 |
| 1,609 meters | 12 |
| 1,602 another way | 17 |
| 1,601 in Roman numerals | 23 |
| 1,575-mile river known to some locals as the Zhayyq | 51 |
| 1,550-mile continental range | 28 |
| 1,523-mile highway | 18 |
| 1,502, in a way | 15 |
| 1,501, Roman-style | 18 |
| 1,501, another way | 18 |
| 1,500-year-old text | 19 |
| 1,500-mile-long range | 21 |
| 1,500-mile Russian chain | 24 |
| 1,500-mile Eurasian chain | 25 |
| 1,500-mile (or so) Russian chain | 32 |
| 1,500 years before the Wright brothers' first flight | 56 |
| 1,500 years after the birth of Calvin | 37 |
| 1,440 minutes | 13 |
| 1,400, to Caesar | 16 |
| 1,201, to Tiberius | 18 |
| 1,2,3, etc. | 11 |
| 1,164, in old Rome | 18 |
| 1,156, to Vergil | 16 |
| 1,156, to Caesar | 16 |
| 1,151, to Caesar | 16 |
| 1,150, to Brutus | 16 |
| 1,111 | 5 |
| 1,101, to Cato | 14 |
| 1,101 in Roman numerals | 23 |
| 1,101 in old Rome | 17 |
| 1,100-mile run | 14 |
| 1,100 ___ second (speed of sound) | 33 |
| 1,099 regal garments | 20 |
| 1,060, to Caesar | 16 |
| 1,055, to Cato | 14 |
| 1,055 joules: Abbr. | 19 |
| 1,055 joules | 12 |
| 1,055 in Rome | 13 |
| 1,051, to Hadrian | 17 |
| 1,051, once | 11 |
| 1,049 steamships | 16 |
| 1,048,576 bytes, for short | 26 |
| 1,044 months | 12 |
| 1,024 KB | 8 |
| 1,024 bytes, for short | 22 |
| 1,024 bytes, briefly | 20 |
| 1,007 | 5 |
| 1,006, to Seneca | 16 |
| 1,006, in old Rome | 18 |
| 1,004, in old Rome | 18 |
| 1,002, in old Rome | 18 |
| 1,002 in old Rome | 17 |
| 1,001 log holders | 17 |
| 1,000th of an inch | 18 |
| 1,000-yr. realm | 15 |
| 1,000-year Eur. realm | 21 |
| 1,000-pound Yellowstoner | 24 |
| 1,000-pound weight units | 24 |
| 1,000-plus-year realm: Abbr. | 28 |
| 1,000-pager, e.g. | 17 |
| 1,000-kilometer chain | 21 |
| 1,000-kilogram weights | 22 |
| 1,000-foot-deep lake that straddles a state line | 48 |
| 1,000-days queen | 16 |
| 1,000,1,000 | 11 |
| 1,000,000-___ (long odds) | 25 |
| 1,000,000,000 years, in geology | 31 |
| 1,000,000,000 years | 19 |
| 1,000,000 in the phrase "When I win a million dollars" is an example of an ___ number | 95 |
| 1,000,000 cc. | 13 |
| 1,000, in Tours | 15 |
| 1,000, en français | 21 |
| 1,000 ___ = 1 inch | 18 |
| 1,000 years before the coronation of Queen Elizabeth I | 54 |