| Clue | Source | Date |
|---|---|---|
| Subtraction opp. | ||
| Annex, briefly | Wall Street Journal | 29 Feb 2020 |
| Wing: Abbr | The New Yorker | 11 Mar 2019 |
| Annex: Abbr | Newsday | 24 Jun 2018 |
| Building annex: Abbr | New York Times | 20 Feb 2017 |
| Building annex: Abbr. | ||
| Arith. class lesson | ||
| Bldg. annex | ||
| Wing: Abbr. | ||
| Postscript: Abbr. | ||
| Annex: Abbr. | ||
| Bldg. annex | ||
| Arith. process | ||
| Annex, briefly | ||
| Something appended: Abbr. | ||
| Annex, for instance: Abbr. | ||
| Supplement (abbr.) | ||
| First-grade subj. | ||
| Math process: Abbr. | ||
| Sum: Abbr. |