Unit 10 Contents

Play Start, Hop, Stop! using the game directions, spinners, and game sheets in the Student Activity Book.

Adding and Subtracting with Decimals

Mrs. Dewey asked Roberto to find this sum.

3.7 + 1.6 = ?

Roberto solved the problem using a number line.

1. How is Roberto's method different from the decimal hoppers?
2. Explain how Roberto solved the problem.
3. Use a number line to solve the problem a different way.

Tanya solved this subtraction problem using a number line.

1. What answer does Tanya's number line show?
2. Explain how Tanya solved the problem.
3. Use a number line to solve the problem a different way.