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Unit 4 - Lesson 7 - Grade 5: Illustrative Mathematics

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Last updated 3 months ago
17 Questions
Note from the author:
Grade 5 Unit 4
Lesson 7: Build Multiplication Fluency
CC BY 2021 Illustrative Mathematics®
Grade 5 Unit 4
Lesson 7: Build Multiplication Fluency
CC BY 2021 Illustrative Mathematics®
Lesson: Build Multiplication Fluency

Notice and Wonder: Same Solution (Warm Up)

1.

What do you notice?

2.

What do you wonder?

Greatest Product

Directions:
  • Partner A chooses a number card and writes the number in one of the blanks for Round 1.
  • Partner B does the same.
  • Repeat until each partner has a two-digit by three-digit multiplication problem.
  • Find the product.
  • The partner with the greater product wins a point.
  • The partner with the most points after 5 rounds wins the game.

Round 1

3.

Partner A

4.

Partner B

The partner with the greater product wins a point.

Round 2

5.

Partner A

6.

Partner B

The partner with the greater product wins a point.

Round 3

7.

Partner A

8.

Partner B

The partner with the greater product wins a point.

Round 4

9.

Partner A

10.

Partner B

The partner with the greater product wins a point.

Round 5

11.

Partner A

12.

Partner B

The partner with the greater product wins a point.

Desperately Seeking 9 New Units (Optional)

Tyler notices that when he uses the standard algorithm and composes a new unit, sometimes there is 1 new unit, sometimes 2, all the way up to 8. He has not seen an example with 9 of the new unit.

For each of these products, how many of each new unit do you compose?
13.

14.

15.

16.

Do you think it is possible to compose 9 of a new unit with the standard multiplication algorithm?

Cool Down: Calculating a Product
17.

Use the standard algorithm to find the product 372 x 83.