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Order of Operations
Related Links
- Order of operations
- Parenth...theses .28 .29
- Exponentiation
- Nth root
- Multiplication
- Division
- Addition
- Subtraction
- 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.
- Intro
- Please Excuse My Dear Aunt Sally
- Step 1: Parenthesis
- Step 2: Exponent
- Step 3: Multiply and Divide
- Step 4: Add and Subtract
- Example: Please Excuse My Dear Aunt Sally
- Extra Example 1: Evaluating Expression
- Extra Example 2: Evaluating Expression
- Extra Example 3: Evaluating Expression
- Extra Example 4: Evaluating Expression































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!