| Answer | Crossword Clue |
|---|---|
| EXT | Tel. number add-on |
| EXTS | Tel. number add-ons |
| EXT | Tel. no. add-on |
| EXT | Business phone number add-on: Abbr. |
| EXTS | Tel. no. add-ons |
| ONE | Easy number to add |
| SEWON | Add, as a number to a uniform |
| MAGICSQUARE | Its rows, columns and diagonals all add up to the same number |
