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Unit 2 - Lesson 15 - Grade 5: Illustrative Mathematics

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15 Questions
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Grade 5 Unit 2
Lesson 15: Multiply More Fractions
CC BY 2021 Illustrative Mathematics®
Grade 5 Unit 2
Lesson 15: Multiply More Fractions
CC BY 2021 Illustrative Mathematics®
Lesson: Multiply More Fractions

Number Talk: Multiply Mixed Numbers (Warm Up)

Find the value of each expression mentally.
1.

2.

3.

4.

Multiply Your Way

Select numbers from the list in the blank spaces so the situations make sense. Each number will be used only one time. Be prepared to explain your thinking.

5.
The area of the rug is 16 1/2 square feet. The length of the rug is__________feet.

The width of the rug is__________feet.
6.

Explain your thinking.

7.
The puzzle is feet wide. It is__________feet long. It has an area of__________square feet.
8.

Explain your thinking.

9.
The area of the whiteboard is 23 square feet. The length of the whiteboard is__________feet. The width of the whiteboard is__________feet.
10.

Explain your thinking.

Share your solutions with your partner. Explain what choices you made and why.

Equivalent Expressions

Each diagram represents a way to calculate 4 x 5 2/3. Each expression is equivalent to
4 x 5 2/3. Match the diagrams and expressions.
11.

Match the diagrams and expressions.

12.

Show or explain your reasoning.


13.

Choose your favorite diagram and expression to find the value of

Explain why it is your favorite.

Cool Down: Mixed Number Multiplication
14.

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

15.

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