Adding Fractions

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Objective

I can add fractions with unlike denominators by finding a common denominator and then summing the adjusted numerators.

Part 1 of 3

Warm-up video

Math with Mr. J · 5:19Vetted 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 should take when adding fractions with unlike denominators?

2

If you have the fractions ⅓ and ¼, what is the least common denominator you would use to add these fractions?

Part 3 of 3

Exit ticket

Quick comprehension check

Add the fractions ⅗ and ¼. Show all your work, including finding the common denominator and simplifying the final answer if necessary. A recipe requires ⅖ cup of flour and ⅓ cup of sugar. How much flour and sugar is needed in total? Show your calculations, including finding the common denominator and expressing your answer in simplest form.

Sample answer included in the free materials

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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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Adding Fractions Lesson Plan for Grade 8 | Free Math Lesson