Lesson objective: Fluently solve equations using inverse operations.

This lesson helps to build procedural skills with using inverse operations to solve equations. Tape diagrams are used because it shows how students can determine the appropriate inverse operation to use in order to solve the equation. This work develops students' understanding that because equations show a relationship between expressions, we can use the relational meaning of the equal sign to find a missing value in an equation.

Students engage in Mathematical Practice 6 (Attend to precision) as they identify the inverse operation needed to solve an equation. Then, students will correctly apply the inverse operation to accurately solve the equation.

**Key vocabulary:**

- equation
- expression
- inverse operation
- value