# Unit 5

## Expressions, equations, inequalities (one-step, one-variable only)

Understandings:

• Solving an equation means finding the value of the variable that makes the number sentence mathematically true.
• Solve and graph inequalities (Solving an equality means finding the values that make the number sentence mathematically true).
• Solve word problems using inequalities and interpret the solution.

Vocabulary:

• Equation, inequality, variable, one-variable, two-step, one-step, greater than (>), less than (<), equal to (=)

Learning Targets:

• Reason about and solve on-variable equations and inequalities
• Explain what a variable represents
• Use variables to solve problems involving expressions
• Use variables to represent the relationship between quantities in real-world problems
• Explain the relationship between dependent and independent variables.
• Analyze the relationship between dependent and independent variables.
• Explain the relationship between rate, ratio, and percent.
• Translate words into expressions.
• Read expressions using appropriate mathematical terms.
• Evaluate expressions using the order of operations.
• Fluently add, subtract, multiply and divide multi-digit decimals