Money Math Calculator: Add, Subtract, Multiply, Divide

How to Do Math with Money

This money calculator helps you add, subtract, multiply, and divide dollars and cents. Below are examples of how these calculations are performed.

How to Add Money

Use long addition to combine monetary amounts. Ensure all amounts have two decimal places (cents) and that the decimal points are lined up.

Adding Money Math Problem

You are depositing 3 checks: $45.70, $191, and $20.65. First, adjust $191 to $191.00.

Your bank account will increase by $257.35.

How to Subtract Money

Use regular subtraction, lining up the decimal points. Remember to borrow from the column to the left when necessary.

Subtracting Money Math Problem

A concert ticket cost $141.75, and your share of dinner was $35.50. Find the net amount owed.

Your friend owes you $106.25.

How to Multiply with Money

Multiply the money amount by a whole number factor. You can ignore the decimal during the multiplication steps but must re-insert it two places from the right in the final product.

Multiplying Money Math Problem

Monthly streaming costs are $52.60. Multiply by 12 months for the yearly total.

You pay a total of $631.20 per year.

How to Divide Money

This tool offers two division methods: dividing by a number (for distribution) and dividing by an amount (for calculating quantity).

Divide Money by a Number (Distribution)

Divide the dollar amount by a non-monetary number (e.g., number of people, items).

Example: A $34.80 Uber ride split by 3 people.

Result: $34.80 ÷ 3 = $11.60 per person.

Divide Money by an Amount of Money (Quantity)

Divide a total amount by a price. This is used to find out how many items you can buy.

Example: $560 savings divided by a stock price of $9.20.

Move the decimal two places to the right in both numbers: $56,000 ÷ $920. Result: 60 shares with a remainder of $8.00.