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Unit 3 - Lesson 2 - Grade 5: Illustrative Mathematics

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Grade 5 Unit 3
Lesson 2: Represent Unit Fraction Multiplication
CC BY 2021 Illustrative Mathematics
Grade 5 Unit 3
Lesson 2: Represent Unit Fraction Multiplication
CC BY 2021 Illustrative Mathematics
Lesson: Represent Unit Fraction Multiplication

Which One Doesn’t Belong: Diagrams (Warm Up)

Which one doesn’t belong?

Interpret Diagrams

Show 1/3 of the square.

Shade 1/4 of 1/3 of the square.

How much of the whole square is shaded?

Show 1/4 of the square.

Shade 1/3 of 1/4 of the square.

How much of the whole square is shaded?

How are the diagrams the same and how are they different?

Write an Expression

Priya shaded part of a square.

Explain or show how the expression 1/5 X 1/2 represents the area of the shaded piece.

Explain or show how the expression 1/2 X 1/5 represents the area of the shaded piece.

Write a multiplication expression to represent the area of the shaded piece. Be prepared to explain your reasoning.

How much of the whole square is shaded?

Cool Down: How Much is Shaded?

Write a multiplication expression to represent the area of the shaded region.