Converting Fractions/Decimals/Percents
Percent Proportion
Percent Change
Sales Tax, Tip, Discount
Simple Interest
100

Convert 12% to a decimal.

0.12

100

What is 10% of 65?

6.5

100

A fruit drink that was sold in 16-ounce containers is now sold in 20-ounce containers. What is the percent of change in quantity? 

25%

100

The total price of a $50 bicycle with 10% tax

$55

100

P=300

R=5%

T=1 year

What is the interest?

$15

200
Convert 4.9% to a decimal.
What is .049
200

20 is what percent of 50?

40%

200

On Monday, Terry made 11 freethrows and on Wednesday, he made 15. What is the percent increase? Round to the nearest whole number.

36%

200

The total bill for dinner that costs $30 if you leave a 22% tip. 

What is $36.60?

200

P=600

R=12%

T=3 years

What is the interest?

$216

300
Convert .008 to a percent
What is 0.8%
300

15 is 30 percent of what number? Round to the nearest tenth. 

50%

300

On your first test, you get a 62 and on the retake, you get an 88. What is the percent increase in your grade? Round to the nearest whole number.

42% increase

300

The cost of a pair of Jordans originally priced at $210, marked 25% off

$157.50

300

P=1000

R=4%

T=30 months

What is the interest?

$100

400

Convert  7/10  to a percent

70%

400

What is 22% of 70? Round to the nearest whole number.

15%

400

Your first mile you run takes you 12 minutes, the second mile you run takes you 9.5 minutes. What is the percent of decrease in your time? Round to the nearest whole number. 

21%

400
The cost of a pair of Jordans originally priced at $200, marked 25% off, after 10% tax?
What is $165?
400

You invest $1,500 at a 5.5% interest rate for 2 years. How much do you have in your account after 2 years. 

$1,665

500

Convert 4/5 to a percent

80%

500

18 is what percent of 53? Round to the nearest hundredth.

33.96%

500

The original price of a book was $17.95. It was marked down to $15.25. What is the percent of decrease in the price? Round to the nearest whole number.

15%

500

Your items at Target ring up to be $54.18, tax is 6.25%. How much is just the tax? Not the whole bill. Round to the nearest cent. 

$3.39

500

You take out a loan for $3,500 at a 6% interest rate for 18 months. What do you owe at the end of 18 months?

$3,815