Adding and Subtracting Fractions

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Objective

I can find a common denominator to add and subtract fractions with unlike denominators.

Part 1 of 3

Warm-up video

mathantics · 4:22Vetted channel

We don't generate video — this one is by mathantics 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 a common denominator, and why is it important when adding or subtracting fractions?

2

If you want to add ⅓ and ¼, what is the first step you need to take to find a common denominator?

Part 3 of 3

Exit ticket

Quick comprehension check

Find a common denominator for the fractions ⅓ and ⅖. Then, add the two fractions and show your work. Find a common denominator for the fractions ¼ and ⅗. Then, subtract the second fraction from the first and show your work.

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

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