| Answer | Crossword Clue |
|---|---|
| ABACUS | Calculator with beads |
| ABACI | Calculator with no batteries |
| ADD | Work with a calculator |
| COMPUTE | Determine, as with a calculator |
| MATH | A calculator assists with it |
| ADD | Work with a calculator, in a way |
| EPA | Federal org. with a "personal greenhouse gas emissions calculator" |
