Adding Fractions with Unlike Denominators

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Objective

I can add fractions with unlike denominators by converting them to equivalent fractions.

Part 1 of 3

Warm-up video

Khan Academy · 4:02Vetted channel

We don't generate video — this one is by Khan Academy 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 least common multiple (LCM) of 4 and 5? Explain how you found it.

2

Convert the fraction ¾ into an equivalent fraction with a denominator of 12. Show your work.

Part 3 of 3

Exit ticket

Quick comprehension check

Add the fractions ⅖ and ⅗. Show your work by converting both fractions to equivalent fractions with a common denominator. Add the fractions ¼ and ⅓. Show your work by converting both fractions to equivalent fractions with a common denominator.

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

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