Order of operations

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What is the order of operations in mathematics?

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The order of operations is a set of rules that determines the sequence in which calculations are performed. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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CCSS.7.NS.A.3

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What does the acronym PEMDAS stand for?

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PEMDAS stands for: P - Parentheses, E - Exponents, MD - Multiplication and Division (from left to right), AS - Addition and Subtraction (from left to right).

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CCSS.6.EE.A.1

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The value is 13. (First, multiply 5 by 2 to get 10, then add 3.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

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

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

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The value is 36. (First, add 2 and 1 to get 3, then multiply by 12.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

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The value is 43. (First, calculate 3 times 5 to get 15, then 2 times 4 to get 8. Finally, 50 - 15 + 8 = 43.)

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CCSS.5.OA.A.1

CCSS.5.OA.A.2

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The value is $22.90. (First, calculate 3 times 1.50 to get 4.50, then add 2.60 to get 7.10. Finally, 30 - 7.10 = 22.90.)

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CCSS.7.NS.A.3

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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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CCSS.5.OA.A.1

CCSS.5.OA.A.2

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CCSS.7.NS.A.3

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CCSS.5.OA.A.2