Holt CA Course Evaluating Algebraic Expressions Preview 6-1 Relating Fractions, Decimals, and PercentsRelating Fractions, Decimals, and Percents 6-2 Estimating with PercentsEstimating with Percents 6-3 Finding PercentsFinding Percents 6-4 Finding a Number When a Percent is KnownFinding a Number When a Percent is Known 6-5 Applying Percent of Increase and DecreaseApplying Percent of Increase and Decrease 6-6 Commission, Sales Tax, and ProfitCommission, Sales Tax, and Profit 6-7 Applying Simple and Compound InterestApplying Simple and Compound Interest Lesson Quizzes

Holt CA Course Evaluating Algebraic Expressions 6-1 Relating Fractions, Decimals, and Percents Lesson Quiz: Part I Find each equivalent value. 1. as a percent 2. 20% as a fraction 3. as a decimal Compare. Write, or = % % < 37.5% >

Holt CA Course Evaluating Algebraic Expressions Lesson Quiz: Part II 6. Write 245%,, 0.133, and 66.6% in order from least to greatest. 5. About 342,000 km 2 of Greenlands total area (2,175,000 km 2 ) is not covered with ice. To the nearest percent, what percent of Greenlands total area is not covered with ice? 16% 0.133,, 66.6%, 245% Relating Fractions, Decimals, and Percents

Holt CA Course Evaluating Algebraic Expressions 6-2 Estimating with Percents Lesson Quiz: Part I Estimate % of % of Ian had dinner with some friends at a restaurant. The check for his dinner was $ If he wants to leave a 20% tip, what is the total amount Ian should pay? 4 90 Possible answer: $12.25 Possible answers:

Holt CA Course Evaluating Algebraic Expressions Lesson Quiz: Part II 4. Approximately 8% of each batch of jeans produced at one factory is defective. Ms. Fleming said that in a batch of 400 jeans, about 35 jeans would be defective. Estimate to determine if her number is reasonable. Explain. Yes, because 8% of 400 is a little less than 10% of % of 400 is 40, and 35 is a little less than Estimating with Percents

Holt CA Course Evaluating Algebraic Expressions 6-3 Finding Percents Lesson Quiz: Part I Find each percent. 1. What percent of 33 is 22? 2. Of Earths 197 million mi 2 of surface area, about 139 million mi 2 is water. Find the percent of Earths surface that is covered by water. 3. The Ramirez family bought a large bag of oranges during their trip to Florida. Jorge ate of the oranges, Ann ate 0.18 of the oranges, Mrs. Ramirez ate 22% of the oranges, and Mr. Ramirez ate the rest. What percent of the oranges did Mr. Ramirez eat? 70.6% 20% 66 %

Holt CA Course Evaluating Algebraic Expressions Lesson Quiz: Part II 4. Rada is 170% as tall as her brother Raj. Raj is 0.82 m tall. To the nearest tenth of a meter, how tall is Rada? 5. The volume of Lake Superior is 2900 mi 3 and the volume of Lake Erie is 116 mi 3. What percent of the volume of Lake Superior is the volume of Lake Erie? 1.4 m 4% 6-3 Finding Percents

Holt CA Course Evaluating Algebraic Expressions 6-4 Finding a Number When the Percent is Known Lesson Quiz is 12 % of what number? is 25% of what number? 3. 44% of what number is 11? % of what number is 145? 5. Larry has 9 novels about the American Revolutionary War. This represents 15% of his total book collection. How many books does Larry have in all?

Holt CA Course Evaluating Algebraic Expressions 6-5 Applying Percent of Increase and Decrease Lesson Quiz Find each percent increase or decrease to the nearest percent. 1. from 12 to from 1625 to from 37 to from 1.25 to A computer game originally sold for $40 but is now on sale for 30% off. What is the sale price of the computer game? 14% decrease 25% increase 238% increase 32% decrease $28

Holt CA Course Evaluating Algebraic Expressions 6-6 Commission, Sales Tax, and Profit Lesson Quiz 1. Every month, Gillian makes $1600 plus an 8.9% commission on sales. If her sales last month totaled $18,400, what was her total pay? 2. The sales tax is 5.75%, and the shirt costs $20. What is the total cost of the shirt? 3. Sheridan has a yearly income of $39,650, and he is advised to invest $4500 every year. What percent of his income should he invest, to the nearest tenth of a percent? $21.15 $ % 4. A grocery store earns 5% profit on all canned goods. If the store sold $1635 of canned goods, what was the profit? $81.75

Holt CA Course Evaluating Algebraic Expressions 6-7 Applying Simple and Compound Interest Lesson Quiz: Part I 1. A bank is offering 2.5% simple interest on a savings account. If you deposit $5000, how much interest will you earn in one year? 2. Joshua borrowed $1000 from his friend and paid him back $1050 in six months. What simple annual interest did Joshua pay his friend? 10% $125

Holt CA Course Evaluating Algebraic Expressions Lesson Quiz: Part II 3. The Hemmings borrowed $3000 for home improvements. They repaid the loan and $600 in simple interest four years later. What simple annual interest rate did they pay? 4. Theresa invested $800 in a savings account that pays 4% interest compounded quarterly. Find the value of the investment after 6 years. 5% $ Applying Simple and Compound Interest