# Lesson 10 Place Value and the Number Line

Let’s compare methods using the number line.

## Warm-up Notice and Wonder: Base-ten and the Number Line

What do you notice? What do you wonder?

## Activity 1 Compare Representations

Clare subtracted and represented her work with a base-ten diagram.

Write an equation to represent Clare’s work.

Represent Clare’s method on the number line.

Find the value of

. Show your thinking using a base-ten diagram.

Represent how you found the value of

on the number line.

## Activity 2 On the Number Line

Diego is finding the value of

Write an equation to show the sum for Diego’s work.

Find the value of

. Represent your thinking on the number line.

Find the value of

. Represent your thinking on the number line.

Find the value of

. Represent your thinking on the number line.

## Practice Problem

## Problem 1

Find the value of