# Lesson 8 Equations on a Number Line

Let’s write equations and represent them on a number line.

## Warm-up Choral Count: Back by 10

Count back by 10, starting at 99.

Count back by 10, starting at 98.

Count back by 10, starting at 95.

What patterns do you see?

## Activity 1 Represent Equations

Represent each equation on the number line.

## Activity 2 Write Equations

For each number line, write an equation that matches the diagram.

Equation:

Equation:

Equation:

Equation:

Compare your equations with your partner.

Pick the 2 number lines you think are most alike. Explain your choice to your partner.

## Practice Problem

## Problem 1

Here is a number line.

Write an equation that the number line represents.

Explain how your equation matches the number line.