GED Math Practice Test

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If you are deducting an amount to find out how much less you have, which mathematical operation are you likely using?

Subtraction
Multiplication
Addition
Division

The correct answer is: Subtraction

When you are looking to determine how much less you have after deducting an amount, you are using subtraction. Subtraction is the mathematical operation that allows you to take one quantity away from another. For example, if you have a total of 20 and you spend 5, you would subtract 5 from 20 to find out how much you have left, which would be 15. This process of deducting helps you understand the difference between the two quantities, hence why subtraction is the correct choice in this context.