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Percent Increase
and Decrease
Module 4, Lesson 4
Do Now:
Exit Ticket For Lesson 3
3/9/15
Homework:
Lesson 4 Problem set:
1,2,3,4,6

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S.16

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S.17

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S.20

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S.20

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b.) Game stop is having a sale and all games
are reduced by 55%. If the original price
was $70, what is the new price?
a.) Last year the 6th grade had 350
students. This year the number increased
36%. How many students are in this year's
6th grade class?
Extra Examples

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S.21

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S.21

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S.22

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Discussion
Consider the following statement: "A sales representative is
taking 10% off of your bill as an apology for any inconveniences."
Write down what you think this statement implies?
S.22

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S.22

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Finding Percent Decrease
New = percent(Old)
S.23

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3.) For each phrase, identify the whole unit: S.24

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Closing:
1.) How does the context of a problem determine whether there
is a percent increase or decrease?
2.) Using the equation Quantity = Percent x Whole, what does
the whole represent in a percent increase or decrease problem?
What does the quantity represent?

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