# Lesson 1 Add and Subtract to Compare

Let’s solve Compare problems with larger numbers.

## Warm-up Which One Doesn’t Belong: Compare Representations

Which one doesn’t belong?

## Activity 1 Movie Snacks

Use the bar graph to answer the questions.

What is the total number of students that chose popcorn or pretzels? Show your thinking.

How many more students chose nachos than chose popcorn? Show your thinking.

## Activity 2 Build and Compare

Lin and Clare used cubes to make trains. What do you notice? What do you wonder?

Make trains with cubes.

partner

number of cubes

Partner A

Partner B

Find the total number of cubes you and your partner used. Show your thinking.

Find the difference between the number of cubes you and your partner used. Show your thinking.

## Practice Problem

## Problem 1

Here are some connecting cubes.

How many connecting cubes are there altogether? Show your thinking.

How many more cubes are there in train 1 than in train 2? Show your thinking.