| Puff ___ (Old World menaces) | 28 |
| Bill checkers, at times | 23 |
| ___-tongue (small fern) | 23 |
| Detox center candidate | 22 |
| One with a pack-a-day habit | 27 |
| User who may be a loser | 23 |
| One with a monkey on his back | 29 |
| One who can't get enough | 28 |
| Very devoted collectors | 23 |
| They live unfulfilled lives | 27 |
| "Paper Moon" tyke | 27 |
| Hall-of-Fame pitcher Joss | 25 |
| "Paper Moon" girl | 27 |
| Ice cream parlor choice | 23 |
| Contribute during preparation | 29 |
| Things waved at the Indy 500 | 28 |
| Supply, as a new ingredient | 27 |
| Mix with, as seasonings | 23 |
| Computer expansion card | 23 |
| Performing a simple operation | 29 |
| Making two and two four | 23 |
| Kind of office machine | 22 |
| Early arithmetic skill | 22 |
| Doing the math, in a way | 24 |
| Child's arithmetic lesson | 29 |
| Start of an African capital | 27 |
| Part of an African capital | 26 |
| ___ Ababa (African Union HQ) | 28 |
| Ethiopia's capital | 22 |
| Capital city in Africa | 22 |
| African Union's capital | 27 |
| For an extra cost: Abbr. | 24 |
| Throw off one's game | 24 |
| Architectural afterthought | 26 |
| Building contractor's job | 29 |
| Supplemental component | 22 |
| Residence afterthought | 22 |
| Firefox extension, e.g. | 23 |
| Enlarge the house, say | 22 |
| Computer peripheral, e.g. | 25 |
| They're not standard | 24 |
| Scanners, webcams, etc. | 23 |
| Mail destination: Abbr. | 23 |
| Contact list listing: abbr. | 27 |
| It's written on an env. | 27 |
| Info on an envelope: Abbr. | 26 |
| 1600 Pennsylvania Ave., e.g. | 28 |
| What MapQuest requests | 22 |
| State of the Union, for one | 27 |
| State of the Union, e.g. | 24 |
| Lines at the Post Office | 24 |
| It might reveal a suite spot | 28 |
| It finishes with a zip | 22 |
| Information on an envelope | 26 |
| Gettysburg event: 1863 | 22 |
| Ready to be posted, say | 23 |
| Business-envelope feature | 25 |
| Puts two and two together | 25 |
| Checks, as a restaurant bill | 28 |
| Utters an afterthought | 22 |
| Computes the bottom line | 24 |
| Puts one's two cents in | 27 |
| Performs basic arithmetic | 25 |
| Follows a recipe direction | 26 |
| Contributes another thought | 27 |
| Puts two and two together? | 26 |
| Follows a cookbook directive | 28 |
| Works on a kakuro puzzle | 24 |
| Totals one's scorecard | 26 |
| Extends, with "to" | 28 |
| Does simple arithmetic | 22 |
| Does a certain math problem | 27 |
| Does a calculator's job | 27 |
| Acts on an afterthought | 23 |
| Writes as a postscript, say | 27 |
| Works on a KenKen puzzle | 24 |
| Hits the "+" button | 29 |
| Gains a string section | 22 |
| Gains a horn section for tour | 29 |
| Drops in the bucket, perhaps | 28 |
| Does the numbers, in a way | 26 |
| Does the math, perhaps | 22 |
| Does some remedial math | 23 |
| Does some kindergarten math | 27 |
| Does a C.P.A.'s work | 24 |
| Continues, conversationally | 27 |
| Continues conversationally | 27 |
| Combines to form a sum | 22 |
| Supplements the recipe | 22 |
| Contributes to the mix | 22 |
| Introduces, as an ingredient | 28 |
| Makes the house bigger | 22 |
| Builds a new room, say | 22 |
| Builds a porch for, e.g. | 24 |
| Builds a deck for, say | 22 |
| Makes sense, as a whole | 23 |
| Expand, as a collection | 23 |
| Enlarge, as one's lead | 26 |
| Include in, as a recipe | 23 |
| Build up, as a collection | 25 |