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.
• 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

### 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.