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Holt CA Course 1 6-6 Percent of Change Warm Up Warm Up California Standards California Standards Lesson Presentation Lesson PresentationPreview

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Holt CA Course 1 6-6 Percent of Change

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Holt CA Course 1 6-6 Percent of Change

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Holt CA Course 1 6-6 Percent of Change

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Holt CA Course 1 6-6 Percent of Change Warm Up Solve. 1. 10% of what number is 6? 2. What percent of 20 is 8? 3. What is 80% of 60? 4. 50 is what percent of 200? 60 40% 48 25%

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Holt CA Course 1 6-6 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 1 6-6 Percent of Change Objective: You will learn how to (YWLHT) solve problems involving percent.

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Holt CA Course 1 6-6 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 1 6-6 Percent of Change The regular price of a bicycle helmet is $42.99. It is on sale for 20% off. What is the sale price? Example 1: Finding the sale price. Step 1: Find the amount of the sale price. The amount of the sales price is $34.39. Think: 80% of $42.99 is what number? Write a proportion. 80 100 = n 42.99 3439.2 = 100n 3439.2 100 = 100n 100 80 42.99 = 100 n Set the cross products equal. Divide each side by 100. 34.392 = n Round to the nearest cent.

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Holt CA Course 1 6-6 Percent of Change The regular price of a bicycle helmet is $42.99. It is on sale for 20% off. What is the sale price?

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Holt CA Course 1 6-6 Percent of Change The regular price of a bicycle helmet is $42.99. It is on sale for 20% off. What is the discount? Example 1B: Finding the Discount 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. 20 100 = n 42.99 859.8 = 100n 859.8 100 = 100n 100 20 42.99 = 100 n Set the cross products equal. Divide each side by 100. 8.598 = n Round to the nearest cent.

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Holt CA Course 1 6-6 Percent of Change The regular price of a bicycle helmet is $42.99. It is on sale for 20% off. What is the discount? Example 1B (Continued) Step 2: Find the sale price. regular – amount of = sales price price discount The sale price is $34.39 $42.99 – $8.60 = $34.39

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Holt CA Course 1 6-6 Percent of Change The regular price of a computer game is $49.88. It is on sale for 15% off. What is the sale price? Check It Out! Example 2

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Holt CA Course 1 6-6 Percent of Change Home Learning

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Holt CA Course 1 6-6 Percent of Change Example 3

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Holt CA Course 1 6-6 Percent of Change Example 4

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Holt CA Course 1 6-6 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 1 6-6 Percent of Change Lesson Quiz Find each percent of change. 1. 10 is increased to 12. 2. 25 is increased to 45. 3. 10 is decreased to 1. 4. The regular price of a coat is $120. It is on sale for 25% off. What is the discount? 5. A backpack that sells for $42 is on sale for 25% off. Find the sale price. 80% 20% 90% $30 $31.50

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Holt CA Course 1 6-6 Percent of Change

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Holt CA Course 1 6-6 Percent of Change

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