This document is a lesson plan on solving percent problems. It includes examples of percent discount problems and steps students should follow to set up and solve percent equations. The lesson objectives are for students to find the percent of a quantity and solve problems involving finding the whole given a part and percent. Students practice setting up percent equations to find original and sale prices, and the number of total items given a percentage.

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Module 1
Ratios and Unit Rates
Topic D: Percents
Lesson 28: Solving Percent Problems
Aug 26­5:
45 PM
Student Outcomes
§ Students find the percent of a quantity. Given a part and the percent, students solve problems involving finding the whole.

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Classwork
Example 1
If an item is discounted 20%, the sale price is what percent of the original price?
Whole
Price
If the original price of the item is $400, how much is the dollar amount of the discount? What are
some ways that we can solve this problem?
How much is the sale price? What are some ways that we can solve this problem?
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21 PM

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STEP 1: Fill in the percentages for Percent Saved or Percent Paid depending on what values
are missing. HINT: We know that percentage saved plus percent paid has to add up to
100%
STEP 2: After all percentages are filled in. Decide which values need to be determined.
Come up with a plan
STEP 3: Model your plan either below or on looseleaf paper and show all work.
STEP 4: What are some ways you can check your answers?
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25 PM

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Please take out your exit ticket for Lesson 27,
close your binder, and complete the exit ticket.
This will be collected.
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33 PM

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Name ___________________________________________________ Date____________________
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34 PM
Lesson 28: Solving Percent Problems
Exit Ticket
1. Write one problem using a dollar amount of $420 and a percent of 40% . Provide the solution to your problem.
2. The sale price of an item is $160 after a 20% discount. What was the original price of the item?

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Problem Set
1. The Sparkling House Cleaning Company has cleaned 28 houses this week. If this number represents 40% of the total number of houses they are clean, how many total houses will the company clean by the end of the week?
2. Joshua delivered 30 hives to the local fruit farm. If the farmer has paid to use 5% of the total number of Joshua’s hives, how many hives does Joshua