Adding Fractions with Unlike Denominators

Free to teach as-is — the teacher guide, student handout, and slides are included.

Free — we'll email you an access link. Google Docs format.

Objective

I can add fractions with different denominators by finding a lowest common denominator and combining the numerators.

Part 1 of 3

Warm-up video

Math with Mr. J · 7:40Vetted channel

We don't generate video — this one is by Math with Mr. J on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

7 questions

1

What is the first step you need to take when adding fractions with different denominators?

2

Explain how to find the least common multiple (LCM) of two numbers. Provide an example using the numbers 4 and 6.

Part 3 of 3

Exit ticket

Quick comprehension check

Add the fractions ⅖ and ⅗. Show all of your work, including finding the common denominator and renaming the fractions. Then, simplify your final answer if possible. Add the fractions ⅞ and ⅖. Show all steps, including finding the common denominator and renaming the fractions. Then, simplify your final answer if possible.

Sample answer included in the free materials

Get the materials

Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

    Complete lesson plan with answer keys and alternate activities

  • Student Handout

    Printable worksheet

  • Slides

    Ready to present

We'll ask for your email to send your access link — nothing else.

Teaching a group at a different level?

Where are your students right now? We'll rebuild this lesson to match — including the teacher guide, student handout, and slides, saved to your Google Drive.

Adapt This Lesson