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Mastering Order of Operations for Mathematical Efficiency

Learn to evaluate expressions with clear rules such as performing operations within group symbols first, then working with exponents, followed by multiplication/division and finally addition/subtraction from left to right. Memorize the mnemonic "Please Excuse My Dear Aunt Sally" for easy recall. Test your skills with practice problems. Created by Lynn Husen & Pat Layton, explore the significance of order of operations. Location: Maury Middle School, Dandridge, TN

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Mastering Order of Operations for Mathematical Efficiency

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  1. Order of Operation

  2. What you'll learn. • You’ll learn to evaluate expressions using the order of operations.

  3. When am I ever going to use this? • Example • Knowing the order of operations will help you find the total cost of adults’ and children’s admissions to the zoo.

  4. Memorize Rules • Number 1 - Do all operations within group symbols first. • This includes parenthesis and brackets.

  5. Memorize Rules • Number 2 - Work all problems that have exponents. Begin from Left to Right.

  6. Memorize Rules • Number 3 - Multiply or Divide (which ever comes first from Left to Right).

  7. Memorize Rules • Number 4 - Add or Subtract (which ever comes first from Left to Right).

  8. Thought of The Day • Please Excuse My Dear Aunt Sally! • This will help you learn the order of operations.

  9. Are you up to the challenge? • 1. (8+3)-5 2. 14-(19-19) • 3. 5x8-3x4 4. 3+5x4 • 5. (24-10)-3x3 • 6. 4(22-18)-3x5 • 7. 3(18-12)-(5-3)

  10. Did you get the right answer??? • 1. 6 4. 23 6. 1 • 2. 14 5. 5 7. 16 • 3. 24 Created By:Lynn Husen & Pat Layton Maury Middle Dandridge, TN

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