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.
Compare your equations with your partner.
Pick the 2 number lines you think are most alike. Explain your choice to your partner.
Here is a number line.
Write an equation that the number line represents.
Explain how your equation matches the number line.