Unit 6 - Lesson 13 - Grade 5: Lesson

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Grade 5 Unit 6
Lesson 13: Put It All Together: Add and Subtract Fractions
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 5 Unit 6
Lesson 13: Put It All Together: Add and Subtract Fractions
CC BY 2021 Illustrative Mathematics®

Lesson: Put It All Together: Add and Subtract Fractions

Number Talk: Sums with (Warm Up)

Find the value of each expression mentally.

Common Denominators

Tyler says: “To find the sum, I can use 18 as a common denominator.”

Han says: “To find the sum, I can use 24 as a common denominator.”

Clare says: “To find the sum, I can use 48 as a common denominator.”

Whom do you agree with? Explain or show your reasoning.

What is the value of

Are there other common denominators you could use to find the sum? Explain or show your reasoning.

Unlike Denominators

Find the value of each expression. Explain or show your reasoning.

Explain or show your reasoning.

Cool Down: Fraction Addition and Subtraction

Find the value of each expression. Explain or show your reasoning.