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Unit 4 - Lesson 6 - Grade 5: Illustrative Mathematics

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Grade 5 Unit 4
Lesson 6: Standard Algorithm: Multi-digit Numbers with Composing
CC BY 2021 Illustrative Mathematics®
Grade 5 Unit 4
Lesson 6: Standard Algorithm: Multi-digit Numbers with Composing
CC BY 2021 Illustrative Mathematics®
Lesson: Standard Algorithm: Multi-digit Numbers with Composing

Number Talk: Three Factors (Warm Up)

Find the value of each product mentally.

Compose a New Unit

Find the value of 241 x 23.

Lin used the standard algorithm to find the value of . Here is her work:

Where do you see 241 x 3 in Lin’s work?

Where do you see 24 x 20 in Lin’s work?

What does the 1 above 241 represent in Lin’s calculation?

Use the standard algorithm to find the value of 182 x 41.

Use the standard algorithm to find the value of 304 x 23.

All the Products

Find the value of each product using the standard algorithm.

Cool Down: Use the Standard Algorithm

Use the standard algorithm to find the product 251 x 34.