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Order of Operations

In this guide, we explore the critical concept of the Order of Operations in mathematics, emphasizing why many calculators can produce incorrect results. Learn the proper sequence: Parentheses first, Exponents next, followed by Multiplication and Division from left to right, and finally Addition and Subtraction. Use the mnemonic PEMDAS (Please Excuse My Dear Aunt Sally) to remember the order. Engage in practical exercises to solidify your understanding, including expressions like 1 + 2 × 3² - (4 × 5). ###

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Order of Operations

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Presentation Transcript

  1. Order of Operations Dillon Kangas Edmt 340

  2. Order of Operations • Many calculators are wrong! • What to do when • Not always left to right • Mnemonic: PEMDAS

  3. Please Excuse My Dear Aunt Sally! • Parenthesis are first, Work inside out • Exponents • Multiply/Divide, left to right • Add/Subtract, left to right

  4. Practice 1 + 2 x 3² - (4 x 5) E:\Order of Operations PDF.pdf

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