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Unit 3 - Lesson 11 - Grade 5: Illustrative Mathematics

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Grade 5 Unit 3
Lesson 11: Divide Unit Fractions by Whole Numbers
CC BY 2021 Illustrative Mathematics
Grade 5 Unit 3
Lesson 11: Divide Unit Fractions by Whole Numbers
CC BY 2021 Illustrative Mathematics
Lesson:Divide Unit Fractions by Whole Numbers

Number Talk: Double the Divisor (Warm Up)

Find the value of each expression mentally.

More Macaroni and Cheese

Jada and her 2 sisters equally share 1/2 a pan of macaroni and cheese.

Draw a diagram to represent the situation.

Explain how this expression represents

Jada and her 2 sisters equally share 1/2 a pan of macaroni and cheese.

How much of the whole pan of macaroni and cheese will each person get?

More People Share

4 people equally share 1/2 a pan of macaroni and cheese.

Draw a diagram to represent the situation.

Explain how your diagram represents

4 people equally share 1/2 a pan of macaroni and cheese.

How much of the whole pan of macaroni and cheese did each person get? Be prepared to explain your reasoning.

5 people equally share 1/2 a pan of macaroni and cheese.
Draw a diagram to represent the situation.

Explain how your diagram represents

5 people equally share 1/2 a pan of macaroni and cheese.
How much of the whole pan of macaroni and cheese did each person get? Be prepared to explain your reasoning.

How are the problems the same? How are they different?

Cool Down: Share Macaroni and Cheese

6 people equally share 1/2 a pan of macaroni and cheese.
Draw a diagram to represent the situation.

6 people equally share 1/2 a pan of macaroni and cheese.
Write a division expression to represent the situation.


6 people equally share 1/2 a pan of macaroni and cheese.
How much of the whole pan does each person get?