# Expressions and Equations

Instructional Time: 30 days

Big Ideas:

• Apply properties of operations to add, subtract, factor, and expand linear expressions with rational coefficients
• Understand that expressions can be written in different forms to shed light on the problem
• Solve real-life mathematical problems with positive and negative rational numbers
• Assess the reasonableness of an answer using mental computation and estimation strategies
• Use variables to represent quantities in real-world or mathematical problems and construct simple equations and inequalities to solve problems

7.3.0: Review Notes

• Variables
• Numerical expressions
• Expressions with variables
• Equivalent expressions
• Expanded form and Standard form of expressions

7.3.1: Expressions

• Use Properties of operations to generate equivalent expressions (7.EE.A)
• Using variables to represent quantities

7.3.2: Equations

• Using cups and counters to model equations
• Representing situation with equations
• Multi-step equations

7.3.3: Inequalities

• Using inequalities to write mathematical statements about a given situation
• Solving one-step inequalities