Lesson 4: Adding and Subtracting Fractions with Unlike Denominators

Introduction

In this lesson, you will learn how to add and subtract fractions with unlike denominators.

Yesterday, you continued practicing comparing fractions with unlike denominators. Today, we are going to learn how to add and subtract fractions with unlike denominators with our knowledge of the least common multiple (denominator).

Before we begin, see if you can answer the following: 

True or False?!

½ + ⅙ = 2/8 

¼ + ⅛ = ⅜ 

In Your Journal: Write your ideas in your journal and we will check back at the end of the lesson to see if you were correct!

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Adding and Subtracting Fractions with unlike denominators

How do we add and subtract fractions with unlike denominators? 

Follow the presentation below to find out!

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Adding Fractions

After solving these problems, go back to your True or False?! warm-up activity. Were your answers correct?

  

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