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Unit 4 - Lesson 3 - Grade 5: Illustrative Mathematics
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Lesson: Partial Products in Algorithms
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Cool Down: Using Partial Products
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Grade 5 Unit 4
Lesson 3: Partial Products in Algorithms
CC BY 2021 Illustrative Mathematics®
Grade 5 Unit 4
Lesson 3: Partial Products in Algorithms
CC BY 2021 Illustrative Mathematics®
Which One Doesn't Belong: Multiplying Large Numbers (Warm Up)
Question 1
1.
Which one doesn't belong?
Partial Products Everywhere
Question 2
2.
Take turns picking out a set of expressions that are equal to 245 x 35 when added together. Use the diagrams if they are helpful.
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Question 3
3.
Explain how you know the sum of your expressions is equal to 245 x 35.
Question 4
4.
What is the value of 245 x 35? Explain or show your reasoning.
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Record Partial Products
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Question 5
5.
How are Andre’s and Clare’s strategies the same? How are they different?
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Question 6
6.
Create a list of equations to match the partial products Andre and Clare found.
Question 7
7.
Find the value of 415 x 43 using partial products.
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