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169What is a Variable?
170Writing Expressions with Variables
171Terms, Coefficients, and Constants
172Writing Expressions from Word Problems
173Like Terms
174The Distributive Property with Variables
175Multiple Variables in Expressions
176Exponents in Variable Expressions
177Order of Operations with Variables
178Reading and Interpreting Algebraic Notation
179Combining Like Terms
180Using the Distributive Property to Simplify
181Simplifying Expressions with Multiple Steps
182Evaluating Expressions by Substitution
183Order of Operations in Evaluation
184Evaluating with Negative Numbers
185Evaluating Expressions with Fractions
186Simplifying Before Evaluating
187Using Formulas and Literal Equations
188Translating Words into Mathematical Expressions
189Writing Equations from Word Problems
190Solving One-Step Word Problems
191Multi-Step Word Problems with Combined Operations
192Age Problems and Consecutive Integer Problems
193Perimeter and Area Word Problems
194Money and Mixture Problems (Introduction)
195Checking Solutions and Problem-Solving Strategies

169What is a Variable?
170Writing Expressions with Variables
171Terms, Coefficients, and Constants
172Writing Expressions from Word Problems
173Like Terms
174The Distributive Property with Variables
175Multiple Variables in Expressions
176Exponents in Variable Expressions
177Order of Operations with Variables
178Reading and Interpreting Algebraic Notation
179Combining Like Terms
180Using the Distributive Property to Simplify
181Simplifying Expressions with Multiple Steps
182Evaluating Expressions by Substitution
183Order of Operations in Evaluation
184Evaluating with Negative Numbers
185Evaluating Expressions with Fractions
186Simplifying Before Evaluating
187Using Formulas and Literal Equations
188Translating Words into Mathematical Expressions
189Writing Equations from Word Problems
190Solving One-Step Word Problems
191Multi-Step Word Problems with Combined Operations
192Age Problems and Consecutive Integer Problems
193Perimeter and Area Word Problems
194Money and Mixture Problems (Introduction)
195Checking Solutions and Problem-Solving Strategies

← Mathematics

Lesson 177 of 3,121·5. Pre-Algebra and Algebraic ThinkingPro lesson

Order of Operations with Variables

Apply PEMDAS to expressions containing variables, understanding the structure before substitution.

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