# Unit 4 Addition and Subtraction on the Number Line (Family Materials)

In this unit, students learn about the structure of a number line and use it to represent numbers within 100. They also relate addition and subtraction to length and represent the operations on the number line diagram.

Near the end of the unit, ask your student to solve the following problems on a number line:

Questions that may be helpful as they work:

• How are the problems similar?

• How are they different?

• How did you show addition? Subtraction?