# Lesson 8 Add and Subtract Fractions

Let’s add and subtract fractions.

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

Which one doesn’t belong?

## Activity 1 Card Sort: Fraction Sums and Differences

Your teacher will give you a set of cards that show expressions.

Sort the cards into 2 categories of your choosing. Be prepared to explain the meaning of your categories.

Sort the cards into 2 categories in a different way. Be prepared to explain the meaning of your new categories.

## Activity 2 Add and Subtract

Find the value of each expression. Explain or show your thinking.

## Practice Problem

## Problem 1

Find the value of each sum. Explain or show your reasoning.

How were the calculations the same? How were they different?