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Holt CA Course Percent of Change Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview

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Holt CA Course Percent of Change Warm Up Solve % of what number is 6? 2. What percent of 20 is 8? 3. What is 80% of 60? is what percent of 200? 60 40% 48 25%

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Holt CA Course Percent of Change Number Sense (NS1.4) - Calculate given percentages of quantities and solve problems involving discounts at sales, interest earned, and tips. California Standards

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Holt CA Course Percent of Change Objective: You will learn how to (YWLHT) solve problems involving percent.

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Holt CA Course Percent of Change Vocabulary Sale price after (Regular Price - Discount = Sale Price ) Sale price – the amount something costs after a discount is taken off (Regular Price - Discount = Sale Price ) Discount – (Regular Price – Sale Price = Discount) Discount – the amount that is taken off, saved, or that you do not have to pay (Regular Price – Sale Price = Discount) Regular price – before (Sale Price + Discount = Regular Price) Regular price – the amount something costs before a discount (Sale Price + Discount = Regular Price)

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Holt CA Course Percent of Change The regular price of a bicycle helmet is $ It is on sale for 20% off. What is the sale price? Example 1: Finding the sale price using proportions. Step 1: Find the amount of the sale price. The amount of the sales price is $ Think: 80% of $42.99 is what number? Write a proportion = n = 100n = 100n = 100 n Set the cross products equal. Divide each side by = n Round to the nearest cent.

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Holt CA Course Percent of Change The regular price of a bicycle helmet is $ It is on sale for 20% off. What is the sale price? Example 1: Finding the sale price using decimals.

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Holt CA Course Percent of Change The regular price of a bicycle helmet is $ It is on sale for 20% off. What is the discount? Example 2: Finding the discount using proportions Step 1: Find the amount of the discount. The amount of the discount is $8.60. Think: 20% of $42.99 is what number? Write a proportion = n = 100n = 100n = 100 n Set the cross products equal. Divide each side by = n Round to the nearest cent.

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Holt CA Course Percent of Change The regular price of a bicycle helmet is $ It is on sale for 20% off. What is the discount? Example 2: Finding the discount using decimals

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Holt CA Course Percent of Change The regular price of a computer game is $ It is on sale for 15% off. What is the sale price? Check It Out! Example 3

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Holt CA Course Percent of Change The regular price of a computer game is $ It is on sale for 15% off. What is the discount? Check It Out! Example 3

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Holt CA Course Percent of Change Home Learning On-Line Tutoring

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Holt CA Course Percent of Change Example 4

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Holt CA Course Percent of Change Example 5

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Holt CA Course Percent of Change Example 6

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Holt CA Course Percent of Change Example 8

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Holt CA Course Percent of Change Example 9

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Holt CA Course Percent of Change Home Learning

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Holt CA Course Percent of Change Number Sense (NS1.4) - Calculate given percentages of quantities and solve problems involving discounts at sales, interest earned, and tips. California Standards

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Holt CA Course Percent of Change Objective: You will learn how to (YWLHT) solve problems involving percent.

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Holt CA Course Percent of Change Sales Tax Sales Tax – ADDED (Price + Sales Tax = Total/Final Cost) Sales Tax – the amount that is ADDED to what you pay (Price + Sales Tax = Total/Final Cost)

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Holt CA Course Percent of Change Example 10

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Holt CA Course Percent of Change Example 12

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Holt CA Course Percent of Change Example 15

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Holt CA Course Percent of Change Example 16

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Holt CA Course Percent of Change Home Learning

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Holt CA Course Percent of Change Lesson Quiz Find each percent of change is increased to is increased to is decreased to 1. and 4. The regular price of a coat is $120. It is on sale for 25% off. What is the discount and sale price? 5. A backpack that sells for $42 is on sale for 25% off. Find the sale price. 80% 20% 90% Discount $30 Sale Price $90 $31.50

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