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 4 answersLast reply by: Amet NazifiTue May 14, 2013 10:49 PMPost by MICHAEL JOHNSON on April 10, 2011Overall, this was a great lesson. However, it was a bit confusing when Professor Pyo went through PEMDAS. She continued to explain that M-D and A-S were the same. I felt that a little more explanation on what she meant by “the same” would have been helpful. The amount of examples helped to learn the concept of order of operations. 0 answersPost by Corinne Lee on July 25, 2011thank you it helped alot 0 answersPost by Amet Nazifi on May 9 at 12:34:38 AMThanks!

Order of Operations

• Order of Operations: The order of which operations to do first.
• To help you remember the order of operations, use â€śPlease Excuse My Dear Aunt Sallyâ€ť
• P: Parenthesis
• E: Exponent
• M: Multiply
• D: Divide
• S: Subtract
• First solve within parentheses; then, solve exponents; then, multiply and divide, etc.

• 2 + 30

• 6 + 12

• 8 + 4

• 18 − 5

• 7 + 16

• 10 − 3 ×3
• 10 − 9

• 2 + 5 ×5 ×5
• 2 + 125

• 30 − 4 ×4
• 30 − 16

• 7 ×(4)2 ÷2
• 7 ×16 ÷2
• 112 ÷2

Evaluate each expression 6 ×(7 − 4)2 ÷3

• 6 ×(3)2 ÷3
• 6 ×9 ÷3
• 54 ÷3

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*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.

Order of Operations

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.