1
What do you notice?
What do you notice?
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What do you wonder?
What do you wonder?
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®
What do you notice?
What do you wonder?
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.
Partner A
Partner B
Partner A
Partner B
Partner A
Partner B
Partner A
Partner B
Partner A
Partner B
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?
Use the standard algorithm to find the product 372 x 83.
Do you think it is possible to compose 9 of a new unit with the standard multiplication algorithm?