# Order of Operations

Taught by muchomath
• Currently 4.0/5 Stars.
7771 views | 2 ratings
Part of video series
Meets NCTM Standards:
Lesson Summary:

In this lesson on order of operations, Mr. Perez introduces the acronym PEMDAS and explains how to use it to compute the values of expressions. He starts with parentheses and other grouping symbols, moves on to exponents, and then to multiplication and division, working left to right. Finally, he covers addition and subtraction, working left to right, whichever comes first. Mr. Perez emphasizes the importance of writing in steps to avoid confusion and retain information.

Lesson Description:

An introduction to order of operations, what the acronym PEMDAS stands for, and how to use order of operations to compute values of expressions.

Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.

• What is the order of operations?
• How can you remember the order of operations?
• What does PEMDAS stand for?
• Why don't you always do multiplication before division in order of operations?
• How do you evaluate 17 - 3 + 7 using order of operations?
• How do you evaluate 2[(2 - 3) + 5] + 7 using order of operations?
• When do you evaluate brackets in order of operations?
• How do you evaluate (5 + 3) - 2^2 / 4 * 3 using order of operations?
• How do you evaluate 4^2 / 2^3 + 3 * 5 using order of operations?
• #### Staff Review

• Currently 4.0/5 Stars.
This is a great introduction to the order of operations for computing expressions. An explanation to the order of operations as well as several example problems are shown in this lesson. The example problems include brackets, parentheses, exponents, multiplication, division, addition, and subtraction.
• #### Aishah

• Currently 5.0/5 Stars.
thanks a lot muchomath i learn so great thank you for all your work:)