Order of Operations

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What is the Order of Operations?

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A set of rules that determines the sequence in which calculations are performed in a mathematical expression. The order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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What does PEMDAS stand for?

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PEMDAS is an acronym for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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16 (First, multiply 2 and 3 to get 6, then add 10.)

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10 (First, subtract 3 from 8 to get 5, then multiply by 2.)

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9 (3 squared means 3 multiplied by itself.)

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30 (First, subtract 4 and 2 to get 2, then multiply by 12 to get 24, and finally add 6.)

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7 (First, multiply 3 and 2 to get 6, then add 5 to get 11, and finally subtract 4.)

Front

What is the purpose of parentheses in mathematical expressions?

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Parentheses indicate which operations should be performed first in an expression.

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15 (First, calculate inside the parentheses: 2 + 3 = 5 and 4 - 1 = 3, then multiply 5 and 3.)

Front

What is an exponent?

Back

An exponent indicates how many times a number (the base) is multiplied by itself.