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 Proportion Percent of Change Percent of Error Tax and Discounts Simple Interest

2 What percent of $90 is $9?

3 10%

4 What number is 20% of 35?

5 7

6 62 is 90.5% of what number?

7 68.5

8 Of the 60 books on a bookshelf, 24 are nonfiction. What percent of the books are nonfiction?

9 40%

10 Roman has 80 pencils in his backpack. 35% of the pencils are red. How many red pencils are in his backpack?

11 28 red pencils

12 Find the percent change: 15 yards to 18 yards

13 20% increase

14 Find the percent change: 132 days to days

15 5% decrease

16 Find the percent change: Last school year the enrollment of Genoa Middle School was 465 students. This year the enrollment is 525.

% increase

18 Tara purchased a DVD player for $150. Six months later, the same DVD player was selling for $120. What was the percent of decrease?

19 20% decrease

20 In one year, Braden’s height went from 60 inches to 63 inches. What was the percent of increase in Braden’s height?

21 5% increase

22 Find the percent of error: Estimated: 13.5 lbs Actual: 15.6 lbs

%

24 Find the percent of error: Estimate: 75 Actual: 126

%

26 George estimated that there were 315 students at a basketball game. The actual number of students at the game was 350. What was the percent of error?

27 10%

28 In an experiment, a chemist estimated the amount of liquid in a beaker to be 52 milliliters. The actual amount of liquid in the beaker was 50 milliliters. What was the percent error?

29 4%

30 Dane estimated that there were 420 people at a concert with him. The actual number of people at the concert was 375. What was the percent error?

31 12%

32 A haircut costs $20. Sales tax is 4.75%. How much will the haircut now cost with the tax?

33 $20.95

34 Tom paid $4.20 tax on a jacket. If the tax rate is 7.5%, what was the original cost of the jacket?

35 $56

36 A pair of in-line skates costs $98. If this price is discounted 9%, what is the final price of the skates?

37 $89.18

38 Joe is buying a fancy calculator. He has a coupon for 20% off which saved him $ What is the original cost of the calculator?

39 $86.45

40 Sara earns a 15% commission on furniture she sells. How much commision would she earn if she sells $1325 worth of furniture?

41 $ – commision

42 How much simple interest will they pay? Principal - $300 Interest Rate – 4% Term – 6 months

43 $6

44 Victoria deposited $2500 into a savings account that pays her simple interest. The interest rate is 3%. How much interest will Victoria earn in 2 years? And what will her balance be?

45 Interest: $150 Balance: $2650

46 Tina took out a 6 year loan for $18,000 to buy a new car. She has to pay 2% simple interest on the loan. How much will Tina have paid in all after the 6 years?

47 $20,160

48 Leon borrowed $3,500 for 9 months at an interest rate of 5%. How much interest will Leon have to pay?

49 $131.25

50 Pablo invests $4200 for 3 years and earns $630, what is the simple interest rate?

51 5%