NAME DATE PERIOD Lesson 4 Homework Practice Aptara Component: ANC_C06_L4 Grade: AM ... Lesson 4...

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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