ACT Math For Dummies
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The rules for deciding the order to evaluate arithmetic expressions, no matter how complex, are called the order of operations. The complete order of operations in math is:

  1. Contents of parentheses (and other grouping symbols) from the inside out

  2. Powers from left to right

  3. Multiplication and division from left to right

  4. Addition and subtraction from left to right

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Mark Zegarelli is a math and test prep tutor and instructor. He is the author of Basic Math & Pre-Algebra For Dummies, SAT Math For Dummies, ACT Math For Dummies, Logic For Dummies, and Calculus II For Dummies.

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