1. $100 dinner; 20% gratuity 2. $12,300 car; 5% sales tax

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Presentation transcript:

1. $100 dinner; 20% gratuity 2. $12,300 car; 5% sales tax Find the total cost to the nearest cent. 1. $100 dinner; 20% gratuity 2. $12,300 car; 5% sales tax 3. $12 book; 8.5% sales tax 4. Jordan’s total phone bill was $85. It included the usage charges plus a 3% state surcharge. What was his actual charge for phone usage? 5. The total cost for a plumber was $190. This included the installation fee plus a 7% service fee. What was the installation fee? 6. Alexa and Jorge ordered Chinese food delivered to their home. The total bill was $36. This included $34.29 for the food and a delivery charge. What percent of the bill was the delivery charge? Course 2, Lesson 2-7

ANSWERS 1. $120 2. $12,915 3. $13.02 4. $82 . 52 5. $177 . 57 6. 5% Course 2, Lesson 2-7

HOW can percent help you understand situations involving money? Ratios and Proportional Relationships HOW can percent help you understand situations involving money? Course 2, Lesson 2-7

Ratios and Proportional Relationships 7.RP.3 Use proportional relationships to solve multistep ratio and percent problems. 7.EE.3 Solve multistep real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies. Course 2, Lesson 2-7 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

Mathematical Practices Ratios and Proportional Relationships Mathematical Practices 1 Make sense of problems and persevere in solving them. 3 Construct viable arguments and critique the reasoning of others. 4 Model with mathematics. 5 Use appropriate tools strategically. Course 2, Lesson 2-7 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

To calculate the sale price of an item after a discount or markdown Ratios and Proportional Relationships To calculate the sale price of an item after a discount or markdown How to determine the better buy Course 2, Lesson 2-7

discount markdown Course 2, Lesson 2-7 Ratios and Proportional Relationships discount markdown Course 2, Lesson 2-7

Ratios and Proportional Relationships Course 2, Lesson 2-7

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

Ratios and Proportional Relationships Course 2, Lesson 2-6

How did what you learned today help you answer the Ratios and Proportional Relationships How did what you learned today help you answer the HOW can percent help you understand situations involving money? Course 2, Lesson 2-7

How did what you learned today help you answer the Ratios and Proportional Relationships How did what you learned today help you answer the HOW can percent help you understand situations involving money? Course 2, Lesson 2-7

How did what you learned today help you answer the Ratios and Proportional Relationships How did what you learned today help you answer the HOW can percent help you understand situations involving money? Sample answers: You can find things such as: the sale price of a DVD that normally costs $22 and is on sale for 25% off the original price the price of a discounted item after sales tax is added the original price of cell phone with a sale price of $239.89, which is a 30% discount Course 2, Lesson 2-7

Ratios and Proportional Relationships Write a short paragraph that explains how yesterday’s lesson on sales tax and tips helped you with today’s lesson. Course 2, Lesson 2-7

HOW can percent help you understand situations involving money? Ratios and Proportional Relationships HOW can percent help you understand situations involving money? Course 2, Lesson 2-7