Chapter 6 Study Guide: Percents
Need to know the following:
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Conversions (Fractions, Decimals, Percents)
Compare & Order Fractions, Decimals, Percents
Finding Part, Whole, Percent
Percent of Change
Discount / Markups
Simple Interest
Conversions: Convert to either a fraction, decimal, or percent.
1. 45%
2. 0.324
3.
Compare and order each set of numbers from least to greatest.
4. 68%, 0.63,
5. 0.15%, 0.015,
6. Tell which number is greater:
, 30%
Finding part, whole, percent: Find the missing piece of information.
7. 20 is what percent of 52?
8. 15 is 30% of what number?
9. 36 is 0.9% of what number?
10. What number is 24% of 80?
Percent of Change: Find the percent of increase or decrease.
11. 24 songs to 78 songs
12. 15 liters decreased by 60%
13. Kate had $2,251.35 in her bank account. Currently, she has $1,975.86 in her account.
Find the percent of change rounded to the nearest percent.
14. In 1986, the average price of a gallon of gasoline was $0.93. In 2016, the average price
is currently $1.82. Find the percent of change to the nearest percent.
Discount, Markup, Tax & Tip: Find the information that the question is asking for.
15. A store pays $70 for a bicycle. The percent of markup is 20%. What is the selling price?
16. A pair of tennis shoes is 40% off, in which they are now $33. What is the original price?
17. The original price of a pair of shorts is $35. They are listed for 25% off. What is the
sale price?
18. A bicycle is on sale for $189.50. The sales tax rate is 5%. What is the total price?
19. Rosa and her friends are eating out for dinner. The bill was $45.80. They want to leave
a 20% tip. How much should they leave for a tip?
Simple Interest
20. A bank is offering 2.5% simple interest on a savings account. If you put in $5000, how
much interest will you earn in two years?
21. To buy a car, Jessica borrowed $15,000 for 3 years at an annual simple interest rate of
9%. How much interest will she pay if she pays the entire loan by the end of the third year?
What is the total amount that she will repay?
22. TJ invested $4000 in a bond at a yearly rate of 2%. He earned $200 in interest. How
long was the money invested?
23. Mr. Smith borrowed $9000 for 10 years to make home improvements. If he repaid a
total of $20,000 at what interest rate did he borrow the money?