Math Accelerated • Chapter 6 Percents Copyright © The McGraw-Hill Companies, Inc. Permission is granted to reproduce for classroom use. NAME ___________________________________________________ DATE _____________________ PERIOD __________ Lesson 4 Homework Practice Percent of Change Find the percent of change. Round to the nearest tenth, if necessary. Then state whether the percent of change is an increase or decrease. 1. from 4 m to 5 m 2. from 75 minutes to 100 minutes 25%; increase 33.3%; increase 3. from $9.25 to $6.50 4. from 45 quarts to 8 quarts -29.7%; decrease -82.2%; decrease 5. from 21 mm to 13 mm 6. from $457 to $1000 -38.1%; decrease 118.8%; increase 7. from $39.50 to $40.00 8. from 9 students to 856 students 1.3%; increase 9411.1%; increase 9. from 24 kittens to 7 kittens 10. from 15 songs to 105 songs -70.8%; decrease 600%; increase Find the percent error. 11. projected time: 30 seconds, actual time: 27 seconds 11.1% 12. estimated cost: $1.00, actual cost: $0.65 53.8% 13. actual height: 2 meters, estimated height: 1.5 meters 25% 14. measured perimeter: 22 feet, actual perimeter: 24 feet 8.3% 15. actual number: 220, calculated number: 218 0.9% 16. projected duration: 4 minutes, actual duration: 3.5 minutes 14.3% 17. estimated mass: 250 grams, actual mass: 231 grams 8.2% 18. projected time: 45 minutes, actual time: 80 minutes 43.8% 19. On Tuesday, a baker sold 132 cookies. On Wednesday, she sold 108 cookies. Find the percent of change to the nearest tenth of a percent. about -18.2%; decrease 20. Savannah estimates that her dog weighs 30 pounds. When she takes her dog to the vet for his check-up, the dog is placed on the scale and actually weighs 32.5 pounds. What was Savannah’s percent of error of her estimate? Round to the nearest percent. 8%
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Program: Pre-Algebra
Vendor: Aptara
Component: ANC_C06_L4
Grade: AMPDF Pages
Math Accelerated • Chapter 6 Percents
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NAME ___________________________________________________ DATE _____________________ PERIOD __________
Lesson 4 Homework PracticePercent of Change
Find the percent of change. Round to the nearest tenth, if necessary. Then state whether the percent of change is an increase or decrease.
1. from 4 m to 5 m 2. from 75 minutes to 100 minutes 25%; increase 33.3%; increase
3. from $9.25 to $6.50 4. from 45 quarts to 8 quarts -29.7%; decrease -82.2%; decrease
5. from 21 mm to 13 mm 6. from $457 to $1000 -38.1%; decrease 118.8%; increase
7. from $39.50 to $40.00 8. from 9 students to 856 students 1.3%; increase 9411.1%; increase
9. from 24 kittens to 7 kittens 10. from 15 songs to 105 songs -70.8%; decrease 600%; increase
Find the percent error.
11. projected time: 30 seconds, actual time: 27 seconds 11.1%
12. estimated cost: $1.00, actual cost: $0.65 53.8%
13. actual height: 2 meters, estimated height: 1.5 meters 25%
14. measured perimeter: 22 feet, actual perimeter: 24 feet 8.3%
15. actual number: 220, calculated number: 218 0.9%
16. projected duration: 4 minutes, actual duration: 3.5 minutes 14.3%
17. estimated mass: 250 grams, actual mass: 231 grams 8.2%
18. projected time: 45 minutes, actual time: 80 minutes 43.8%
19. On Tuesday, a baker sold 132 cookies. On Wednesday, she sold 108 cookies. Find the percent of change to the nearest tenth of a percent. about -18.2%; decrease
20. Savannah estimates that her dog weighs 30 pounds. When she takes her dog to the vet for his check-up, the dog is placed on the scale and actually weighs 32.5 pounds. What was Savannah’s percent of error of her estimate? Round to the nearest percent. 8%
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