Applications of Percent problems

Slides:

Advertisements

Similar presentations

Chain Discounts chain discount: series of discounts or when more than one discount is given – a discount on an already discounted price Another discount.

Advertisements

Applications of Percents

Rounding 3 Round to the nearest whole number 3.46

Applying Ratios, Rates, and Proportions : Percent Proportion, Sales Tax, Tip, Discount, and Simple Interest.

Preview Warm Up California Standards Lesson Presentation.

Chapter 14 Personal Financial Management

Shopping & Dining with Proportions

1. Recently, the Smiths had dinner at a local restaurant. Their waiter was very attentive and the food was delicious. They decided the waiter earned a.

Copyright © Cengage Learning. All rights reserved.

7.RP.3b Day 4 first day Objective: I can find simple interest.

Math in Our World Section 8.2 Simple Interest.

Five-Minute Check (over Lesson 5–9) Main Idea and Vocabulary

Simple Interest 7th Grade Math.

Simple and Compound Interest. Simple Interest Interest is like “rent” on a loan. You borrow money (principal). You pay back all that you borrow plus more.

Percent of Increase & Decrease

Simple Interest Formula I = PRT.

9-1: Relating Fractions, Decimals, and Percents

Lesson 1: Buying Furniture and Appliances Consumer Math p

Percents, Discounts and Interest PERCENTS: A percent is a representation of a number, compared to a total value of 100. A percent which is less than a.

P ERCENT ' S T RASHKETBALL Sponsored By: Ms. Sanders.

Use with Lesson 8 MAFS.7.RP.1.3 Course 2, Lesson 2-8 Mathematics Florida Standards – Mathematics, numbering and wording from Find the sale.

Chapter 6 Lesson 7 Using Percent Equations Pgs

3-3 Example 1 Find the simple interest earned on an investment of $500 at 7.5% for 6 months. 1. Write the simple interest formula. I = prt Lesson 3-3 Example.

adjectives as you can think of that describes that word.

Applications of Percents

Estimating With Percents Lesson 6-8. Sales Tax Round the cost of a given item to the nearest dollar. Multiply that estimate by the decimal version of.

Percents A Percent is a ratio that compares a number to 100. The symbol for percent is %. You can write percents as fractions and decimals. 36% as a decimal.

Percent Applications Unit Pre-Algebra Unit 7B. Here are some percent frameworks that will be helpful for you!  I = PRT Retail price = Wholesale price.

Interest, discounts, and sales

Learn to solve problems involving percent of change.

Notes 29 Percent of Change 6-4.

Using Percents to Solve Problems

MJ2A Ch 6.7 – Percent Equation.

Do Now 4/23/10 Take out HW from last night. Take out HW from last night. Practice worksheet 7.6 odds Practice worksheet 7.6 odds Copy HW in your planner.

5.4 Applications of Percent

Fractions --> Decimals

SIMPLE INTEREST Simple interest is the amount paid for the use of money.

Simple Interest.

April 8, 2010Math 132: Foundations of Mathematics 8.1 Homework Solutions 453: 47, 49, 50, Taxes paid = $1008; Total Cost = $17, Discount =

Finding a percent of a number Textbook January 13 th 14 th, 15 th, 16th.

Changing forms Basic % problems % Change % Applications Interest Final Jeopardy.

Sales Tax, Discounts, and Commissions Section 6.7.

8-5 Sales Tax & Discount Indicator (s)  N8 Develop and analyze algorithms for computing with percent and demonstrate fluency in use. Pages

3-7 Percent of Change Objective: Students find percents of increase and decrease and solve problems involving percents of change. S. Calahan 2008.

Holt CA Course Percent of Change NS1.4 Calculate given percentages of quantities and solve problems involving discounts at sales, interest earned,

Lesson 7.6 Concept: How to find simple interest Guidelines: When you compute simple interest for a time that is less than 1year, write the time as a fraction.

Course 2, Lesson 2-8 Find the sale price to the nearest cent. 1. $120 jacket; 30% discount 2. $10,500 car; 10% discount 3. $35 sweater; 18% discount; 3%

Sales Tax and Discount. Sales tax and discount Sales tax - is an additional amount of money charged on items people buy. The total cost is the regular.

1) Define the following: Perimeter Variable Ratio Term.

Simple Interest Formula I = PRT. I = interest earned (amount of money the bank pays you) P = Principle amount invested or borrowed. R = Interest Rate.

Topic 2 Proportional Reasoning with Percents Percent of a Number To find the percent of a number, you can: write the percent as a fraction and.

Percent of Change Warm Up Warm Up Lesson Presentation Lesson Presentation Problem of the Day Problem of the Day Lesson Quizzes Lesson Quizzes.

Simple and Compound Interest Video: Simple/ Compound InterestSimple/ Compound Interest Video: A Penny a DayA Penny a Day.

Estimating Percent Mentally 10% 10% Lola borrowed $125 from a pawn shop. She’ll have to pay back the loan, plus the pawn shop charges an additional 9.9%

Simple Interest Formula I = PRT. I = PRT I = interest earned (amount of money the bank pays you) P = Principle amount invested or borrowed. R = Interest.

Simple Percent Problems To solve a simple percent problem, you change the percent to a decimal and multiply. Solve the following percent problems. Remember.

1 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt Percent.

Hosted by Mrs. Goss Find part Find percent Find whole Word problems

6-3 (E)Simple Interest Formula I = PRT. I = interest earned (amount of money the bank pays you) P = Principle amount invested or borrowed. R = Interest.

How do you find the original amount and amount of change given the percent change and final amount? For example: At a discount furniture store, Chris offered.

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 Course Percent.

Simple and Compound Interest Unit 4 - Investing. Determining Simple Interest I = p * r * t Interest = Principle X Rate X Time ( in years)

Vms Year 9 Mathematics Percentages.

Warm Up 1. Write 0.03 as a percent. 2. Write as a decimal.

RED 2012 BOOK. 4.3 Activity You can find 10% and multiply by the correct amount.  Ex: 40% off of $50.00  10% is $5.00.  $5.00 X 4 (for 40%) = $20.00.

PERCENT OF CHANGE. WHAT IS THE PERCENT OF CHANGE? The amount stated as a percent that a number increases or decreases.

Simple Percent Problems

Simple Percent Problems

Presentation transcript:

Applications of Percent problems 4/22/2013 Review: Applications of Percent problems

Ex. 1) A color laser printer marked originally priced at $699 goes on sale for 30% off. If Chris has already saved up $325, how much more money does he need to buy the printer at the sale price? Find the discount. Find the sale price. Sale price = original – discount Sale price = $699 - $209.70 Sale price = $489.30 Money needed = sale price – money saved Money needed = $489.30 - $325 Money needed = $164.30 Find how much more money Chris needs.

Ex. 2) A bicycle helmet is priced at $18. 50 Ex. 2) A bicycle helmet is priced at $18.50. If it is on sale for 10% off and there is 7% sales tax, how much will it cost after tax? First, find the sale price at 10% off of the original price. Next, find the sale price plus 7% tax. Total cost = sale price + tax Total cost = $16.65 - $1.17 Total cost = $17.82 Sale price = original – discount Sale price = $18.50 – $1.85 Sale price = $16.65

Ex. 3) All appliances at Bargain Outlet are marked down to 70% of the original price. Fred has a coupon for an additional 18% off of the sale price. If the original price of a microwave is $500, how much would Fred pay for the oven before tax? First, find the price at 70% off the original price. Next, find the price with the additional 18% off the sale price. Final price = sale price – discount Final price = $350 - $63 Final price = $287 The final price is the sale price minus the additional discount.

The total cost of the couch plus tax is $600 . 4/22/2013 Ex. 4) Bob offered the salesperson at Furniture Express $600 for a new couch. This offer included 8% sales tax. If the salesperson accepts the offer, what was the cost of couch to the nearest dollar? The total cost of the couch plus tax is $600 . Let x = the cost of the couch The tax on the couch is 8% of the cost. Total cost = cost of couch + tax $600 = x + 0.08x $600 = 1.08x $555.56 = x $556 ≈ x To the nearest dollar, the couch costs $556.

Ex. 5) Between noon and 8:00 p. m Ex. 5) Between noon and 8:00 p.m., the temperature dropped from 70o F to 35o F. What was the percent decrease in temperature between noon and 8:00 p.m.? Remember, percent of change (increase or decrease) is a variation of the percent proportion. There was a 50% decrease in temperature between noon and 8:00 p.m.

Percent error is another variation of the percent proportion. Ex. 6) The radius of a circle was estimated at 15.6 cm. The actual radius was 15.3 cm. Find the percent error in the estimation to the nearest hundredth of a percent. Percent error is another variation of the percent proportion. The percent error of the estimation was 1.96%.

In 3 years, $130.50 would be earned in simple interest. Ex. 7) What is the amount of simple interest on a principal of $580 invested at a rate of 7.5% for 3 years? The simple interest formula is I = prt where I = interest P = principal, or the amount of money borrowed or invested r = annual interest rate expressed as a decimal t = time in years In 3 years, $130.50 would be earned in simple interest.