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Text Comments (7)

4 answers

Last reply by: Amet Nazifi
Tue May 14, 2013 10:49 PM

Post by MICHAEL JOHNSON on April 10, 2011

Overall, 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 answers

Post by Corinne Lee on July 25, 2011

thank you it helped alot

0 answers

Post by Amet Nazifi on May 9 at 12:34:38 AM

Thanks!

Order of Operations

Related Links

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

Evaluate each expression
2 + 6 ×5

  • 2 + 30

32

Evaluate each expression
6 + 3 ×4

  • 6 + 12

18

Evaluate each expression
8 + (9 − 5)

  • 8 + 4

12

Evaluate each expression
18 − (2 + 3)

  • 18 − 5

13

Evaluate each expression
7 + (18 − 2)

  • 7 + 16

23

Evaluate each expression
10 − 32

  • 10 − 3 ×3
  • 10 − 9

1

Evaluate each expression
2 + 53

  • 2 + 5 ×5 ×5
  • 2 + 125

127

Evaluate each expression
30 − 42

  • 30 − 4 ×4
  • 30 − 16

14

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

  • 7 ×(4)2 ÷2
  • 7 ×16 ÷2
  • 112 ÷2

56

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

  • 6 ×(3)2 ÷3
  • 6 ×9 ÷3
  • 54 ÷3

18

*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.

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.

Mathematics: Basic Math