# Money Math Calculator

> Add, subtract, multiply, or divide monetary amounts using exact cent arithmetic where applicable.

Page: https://askcalculators.com/calculator/money-math-calculator/
Definition: https://askcalculators.com/calculator/money-math-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/money-math-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/money-math-calculator/?operation=add&amountA=125.75&amountB=48.35&factor=3

## Inputs
- operation: Operation; type=select; required; default=add; values=add|subtract|multiply|divide
- amountA: First amount; type=money; required; default=125.75
- amountB: Second amount; type=money; required; default=48.35
- factor: Factor or divisor; type=number; required; default=3; min=1e-9

## Outputs
- result: Money result; format=currency; primary
- unroundedResult: Unrounded result; format=number
- roundingDifference: Cent-rounding difference; format=currency
- equation: Equation; format=text

## Formula
addition and subtraction operate on integer cents; multiplication and division are rounded to the nearest cent

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.