Name Date Class % of 800

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1 Test A 1. What percent is modeled by the shaded portion of the grid? 7. Order the numbers from least to greatest. 0.3, 3%, The sales tax in New Jersey is %. For a $1 book, what will the total cost be, including sales tax? 2. A store is selling all of its items for 33% off. Write the percent of discount as a fraction in simplest form. 3. Leah s investment account earns % annually. Write the percent as a decimal. 4. Write 3 4 as a percent. 5. Karen walks 0.7 miles. Write the decimal as a percent.. Frank sees an mp3 player on sale for 1 off. Write this fraction as a percent. 4 For 9 and 10, estimate the percent % of % of What is 75% of 480? 12. Orin s Sports store has a 40% off sale on all of its merchandise. How much is the discount on a soccer ball that originally costs $30? 13. What is 50% of 90? is 75% of what number? % of what number is 44? 117 Holt McDougal Mathematics

2 Test A, continued 1. A set of trading cards sells for $12 before tax. After sales tax, it costs $12.0. What is the sales tax rate? 17. What is the percent of change if 20 is increased to 25? 18. What is the percent of change if 10 is decreased to? 19. A balloon holds 3 cubic feet of air. The balloon is blown up larger to hold 9 cubic feet of air. What is the percent of change for the volume of air inside the balloon? 20. A retailer buys books in bulk at a unit price of $20. Each book is marked up 40% to sell in the store. What is the price of a book in the store? 21. Sadie deposits $4,000 in a bank account that pays 8% simple interest. How much interest will she earn in 5 years? 22. Walter deposits $5,000 in a bank account that pays 9% simple interest. If he doesn t change the principal, what will his balance be in 4 years? 23. How many years will it take for $20,000 to double at a simple interest rate of 5%? 24. How many years will it take for $8,000 to reach $10,000 at a simple interest rate of 2%? 118 Holt McDougal Mathematics

3 Test B 1. What percent is modeled by the shaded part of the grid? 7. Order the numbers from least to greatest. 3%, 0., or A store is selling all of its items for 15% off. Write the percent as a fraction in simplest form. 3. Ricardo s investment account earns % annually. Write the percent as a decimal. 4. Write 7 8 as a percent. 5. Melvin walks miles. Write the decimal as a percent.. Keisha sees a DVD player on sale for 3 off the sale price. Write the 20 fraction as a percent % of 200 people surveyed voted for choice B. Write a fraction to estimate the number of these people who voted for choice B. About how many people voted for choice B? 9. Greg needs to find 87% of 400. Estimate the number. 10. The sales tax in Illinois is.25%. About how much will a pair of jeans that has a ticket price of $48.99 cost, including sales tax? 11. What is 24% of 300? 12. Rick s Clothing store has a 45% off sale on all of its merchandise. How much would a jacket cost that was originally priced at $27.35? is what percent of 50? is 72% of what number? 119 Holt McDougal Mathematics

4 Test B, continued % of what number is 91? 1. A graphic novel sells for $14.95 before tax. After sales tax, it costs $ What is the sales tax rate? 17. What is the percent of change if 24 is increased to 90? 18. What is the percent of change if 40 is decreased to 18? 19. An aquarium holds 8. cubic feet of water. The aquarium is filled up further to hold 9.2 cubic feet of water. What is the percent of change for the volume of water inside the aquarium? 20. A retailer buys a shirt in bulk at a unit price of $18. The shirt is marked up 3% to sell in the store. What is the price of the shirt in the store? 21. Lisa deposits $7,000 in a bank account that pays 5% simple interest. How much interest will she earn in 3 years? 22. Jen deposits $2,500 in a bank account that pays % simple interest. If she doesn t change the principal, what will her balance be in 8 years? 23. About how many years will it take for $4,000 to double at a simple interest rate of 9%? 24. About how many years will it take for $,800 to reach $10,000 at a simple interest rate of 7%? 120 Holt McDougal Mathematics

5 Test C 1. What percent is modeled by the shaded portion of the grid? 7. Order the numbers from least to greatest. 0.07, 0.072, 7%, The sales tax in New York is 8.25%. How much will an $83.99 jacket cost, including sales tax? 2. A store is selling all of its items for 48% off. Write the percent of discount as a fraction in simplest form. 3. David s investment account earns 9.1% annually. Write the percent as a decimal. 4. Write as a percent. 5. Eric walks 0.13 miles. Write the decimal as a percent.. Lindsey sees an mp3 player on sale for 5 off. Write this fraction as a 8 percent. For 9 and 10, estimate the percent % of % of What is 0.25% of 75? 12. Jack s bookstore has a 32% off sale on all of its merchandise. How much is the discount on a book that originally cost $34.95? 13. What is 208.2% of 88? is 24% of what number? % of what number is 2,534? Round to the nearest tenth. 121 Holt McDougal Mathematics

6 Test C, continued 1. A set of trading cards sells for $10.95 before tax. After sales tax, it costs $ What is the sales tax rate? 17. What is the percent of change if 18 is increased to 45? 18. What is the percent of change if 30 is decreased to 25? 19. A balloon holds 3.2 cubic feet of air. The balloon is blown up larger to hold 4.0 cubic feet of air. What is the percent of change for the volume of air inside the balloon? 20. A retailer buys coats in bulk at a unit price of $1. Each coat is marked up 45% to sell in the store. What is the price of a coat in the store? 21. Tracey deposits $4,500 in a bank account that pays 5.5% simple interest. How much interest will she earn in 9 years? 22. Randy deposits $7,540 in a bank account that pays 4.5% simple interest. If he doesn t change the principal, what will his balance be in 10 years? 23. About how many years will it take for $4,000 to double at a simple interest rate of 4.75%? 24. About how many years will it take for $7,500 to reach $10,000 at a simple interest rate of 8.5%? 122 Holt McDougal Mathematics

7 1. H 17. C 18. G 19. B 20. H 21. C 22. J 23. C 24. G Chapter Multiple Choice Test C 1. C 2. H 3. B 4. G 5. C. G 7. C 8. H 9. D 10. H 11. A 12. G 13. A 14. J 15. B 1. H 17. B 18. H 19. B 20. H 21. C 22. H 23. B 24. G Chapter Test A 1. 50% % 5. 70%. 25% , 0.3, 3% 8. $ about about $ $ % % % % 20. $ $1, $, years years Chapter Test B 1. 71% % %. 15% 7. 0., 5 8, 3% 272 Holt McDougal Mathematics

8 8. Answers will vary. Possible answer: 2 of 200 = 80 people 5 9. Answers will vary. Possible answer: 90% of 400 = about $ $ % % % % 19. 7% 20. $ $1, $3, about 11.1 years 24. about.7 years Chapter Test C 1. 3% % %. 2.5% 7. 7%, 0.07, 0.072, $ about about $ , % % % % 20. $ $2, $10, about 21 years 24. about 4 years Chapter Performance Assessment 1. The greatest amount that can be spent is $ Possible answer: CD player: $81.04; race-car video game: 57.19; basketball: $22.48; total amount spent: $ Possible answer: Money to be saved is 250 $10.71 = 89.29; I will save it for 3 years. 4. Possible answer: interest = $ = $13.39; total amount in savings after 3 years = Chapter Cumulative Test 1. C 2. G 3. B 4. G 5. C. G 7. C 8. J 9. C 10. G 11. B 12. F 13. B 14. J 15. B 1. J 17. D 273 Holt McDougal Mathematics