| Answer | Crossword Clue |
|---|---|
| PLUS | Adding machine key |
| TOTAL | Adding-machine key |
| TOTALIZER | Adding machine. |
| ABACUS | Basic adding machine |
| PASCAL | Adding-machine inventor |
| AMOUNT | Adding machine figure. |
| TOTAL | Adding-machine reading |
| ZERO | "The Adding Machine" protagonist |
| RICE | "The Adding Machine" playwright |
| TOTALER | Adding machine, e.g. |
| ABAC | Ancient adding machine: Var. |
| ARITHMETICALAID | Adding machine, for example. |
| ABACUS | Ancestor of the adding machine |
| arithmometer | (obsolete) an early adding machine |
| arithmometers | ARITHMOMETER, (obsolete) an early adding machine |
| ZERO | Main character of Elmer Rice's "The Adding Machine" |
