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Unit 4

Multiplication Fluency

Lesson 8

Wrapping Up Multiplication and Division with Multi-Digit Numbers

Expressions and Equations

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Let’s practice multiplication.

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Unit 4 ● Lesson 8

Learning

Goal

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The Distributive Property

Unit 4 ● Lesson 8 ● Warm-up

Find the value of each expression mentally.

  • 6 ✕ 15
  • 6 ✕ 17

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  • 6 ✕ 2

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  • 6 ✕ 2

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Number Talk

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Fluency Practice Choice Time

Unit 4 ● Lesson 8 ● Activity 1

Choose a game.

  • Greatest Product
  • Number Puzzles: Multiplication and Division

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Targeted Products

Unit 4 ● Lesson 8 ● Activity 2

  1. Using the digits 3, 5, 6, 8, and 9 make a product whose value is close to 50,000.

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  • Using the digits 3, 5, 6, 8, and 9 make a product whose value is close to 20,000.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Targeted Products

Unit 4 ● Lesson 8 ● Activity 2

  • How did you change your reasoning about where to put each digit?
  • When your target number was 50,000 what did you choose for the hundreds place?
  • When your target number was 20,000 what did you choose for the hundreds place?

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Activity Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Multiplication Fluency

Unit 4 ● Lesson 8

Today, we played some games that helped us practice multi-digit multiplication. How did the games help you think about multiplying multi-digit numbers?

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Lesson Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Multiplication Reflection

Unit 4 ● Lesson 8

Describe something you really understand well from this section on multiplying multi-digit numbers, or describe something that was confusing or challenging.

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Cool-down

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.