| Answer | Crossword Clue |
|---|---|
| ONES | Column in an addition problem |
| ONES | Rightmost column in an addition |
| SUM | Answer to an addition problem |
| COGITOERGOSUM | Descartes's statement about pondering an addition problem? |
| ONES | Last column in addition |
| CCED | Sent an e-mail to someone in addition to the main recipient |
