| 1000 or 2000, but not 0 | 23 |
| 1000 calories, for short | 24 |
| 100-year-old NYC subway | 23 |
| 100-year time span (Abbr.) | 26 |
| 100-meter runners, e.g. | 23 |
| 100-meter hurdles, for one | 26 |
| 100-meter competitor, e.g. | 26 |
| 100-member legislature | 22 |
| 100-member governing body | 25 |
| 100-eyed giant of myth | 22 |
| 100, for a Treasury bond | 24 |
| 100% effort and devotion | 24 |
| 100 to a dinar, in Serbia | 25 |
| 100 stotinki in Bulgaria | 24 |
| 100 sen, in Phnom Penh | 22 |
| 100 percent, as an effort | 25 |
| 100 pence, in British slang | 27 |
| 100 or so, e.g.: Abbr. | 22 |
| 100 metric drops: Abbr. | 23 |
| 100 meter record-holder Bolt | 28 |
| 100 is average for them | 23 |
| 100 equal a Serbian dinar | 25 |
| 100 degrees Celsius, for H2O | 28 |
| 100 cubic feet, in shipyards | 28 |
| 100 cents, in Sri Lanka | 23 |
| 100 cents, in some places | 25 |
| 100 cents, in East London | 25 |
| 100 cents, in Cape Town | 23 |
| 100 cents may equal one | 23 |
| 100 centimes, in Haiti | 22 |
| 100 centesimos, in Panama | 25 |
| 100 centesimos, in Chile | 24 |
| 100 centavos in Honduras | 24 |
| 100 Bulgarian stotinki | 22 |
| 100 basis points: Abbr. | 23 |
| 100 Acre Wood youngster | 23 |
| 10-year-old Oscar winner | 24 |
| 10-year sentence, in slang | 26 |
| 10-point Scrabble tiles | 23 |
| 10-point Scrabble piece | 23 |
| 10-legged sea creature | 22 |
| 10-foot Alaskan, at times | 25 |
| 10-10 and 4-4, but not 10-4 | 27 |
| 10-, 11- and 12-year-olds | 25 |
| 10- or 13-line two-rhyme poem | 29 |
| 10,900-ft.-high volcano | 23 |
| 10,900-foot European peak | 25 |
| 10,000,000 rupees, in India | 27 |
| 10,000 --- (musical group) | 26 |
| 10's and 20's, e.g. | 27 |
| 10%, if you're cheap | 24 |
| 10 to the hundredth power | 25 |
| 10 students, for short? | 23 |
| 10 reps X 3, typically | 22 |
| 10 points, for example | 22 |
| 10 percent for the church | 25 |
| 10 on the Beaufort scale | 24 |
| 10 on a scale of one to 10 | 26 |
| 10 on a scale of 1 to 10 | 24 |
| 10 on a 10-point scale, e.g. | 28 |
| 10 of them make a thou | 22 |
| 10 of them are about 6.2 mi. | 28 |
| 10 of ''10'' | 28 |
| 10 miles per hour, say | 22 |
| 10 mi. on a clear day, e.g. | 27 |
| 10 consecutive wins, say | 24 |
| 10 before a slash, briefly | 26 |
| 10 A.M. coffee, in a way | 24 |
| 1/640th of a square mile | 24 |
| 1/6400 of a circumference | 25 |
| 1/640 of a square mile | 22 |
| 1/6 of an ounce (Abbr.) | 23 |
| 1/500 of the Indianapolis 500 | 29 |
| 1/4 of a mile, perhaps | 22 |
| 1/3 of an out, perhaps | 22 |
| 1/3 of a WWII movie title | 25 |
| 1/3 of a war film title | 23 |
| 1/3 of a Clue accusation | 24 |
| 1/2b x h, for a triangle | 24 |
| 1/24 of a "giorno" | 28 |
| 1/200th of the Indy 500 | 23 |
| 1/20 of a franc, formerly | 25 |
| 1/2 of a Kenyan tribesman | 25 |
| 1/12 of a recovery program | 26 |
| 1/100th division: abbr. | 23 |
| 1/100 of an Indian rupee | 24 |
| 1/100 of an Albanian lek | 24 |
| 1/100 of a Brazilian real | 25 |
| 1.3-ounce weight used in Asia | 29 |
| 1.3-ounce Asian weight | 22 |
| 1.3 ounce Asian weight | 22 |
| 1.008, for hydrogen: abbr. | 26 |
| 1.008, for hydrogen (abbr.) | 27 |
| 1.008 for hydrogen, e.g. | 24 |
| 1.0079, for hydrogen: abbr. | 27 |
| 1-_____ (way to guard) | 22 |
| 1-800-USA-RAIL's answerer | 29 |
| 1-800-FLOWERS alternative | 25 |
| 1-2-3 software company | 22 |
| 1,620 yards, in Old Rome | 24 |