There are 15 containers, each of which is filled with 3 tennis balls.Bob calculates the total number of tennis balls by counting by 3’s fifteen times. In other words, Bob counts 3, 6, 9, 12, . . . 42, 45. Michael calculates the total number of tennis balls by adding 15 + 15 + 15 = 45. Are both methods correct?Are the methods related?Is there a relevant property of arithmetic? Explain your answers to these questions.

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Description: There are 15 containers, each of which is filled with 3 tennis balls.Bob calculates the total number of tennis balls by counting by 3’s fifteen times. In other words, Bob counts 3, 6, 9, 12, . . . 42, 45. Michael calculates the total number of tennis

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PREALGEBRA

15th Edition

ISBN:9781938168994

Author:OpenStax

Publisher:OpenStax

Chapter2: The Language Of Algebra

Section: Chapter Questions

Problem 433RE: Describe how you have used two topics from The Language of Algebra chapter in your life outside of...

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There are 15 containers, each of which is filled with 3 tennis balls.

Bob calculates the total number of tennis balls by counting by 3’s fifteen times. In other words, Bob counts 3, 6, 9, 12, . . . 42, 45.
Michael calculates the total number of tennis balls by adding 15 + 15 + 15 = 45.

Are both methods correct?
Are the methods related?

Is there a relevant property of arithmetic? Explain your answers to these questions.

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