Fractions, Decimals, and Percents
Tax, Tip, and Discount
Is/Of
Percent Error
Simple interest
100

Fractions → Decimals 

17/25

0.68

100

Fill in the blank:

Sales tax and tip are ____ to the original price and Discounts are ____ from the original price.

added and subtracted

100

What is 32% of 300?

96

100

A child guessed that a ball was 12 feet away. It was actually 23 feet away. What was the percent error?

47.8%

100

Ben deposited $6,500 in a simple interest account that pays 2.8% interest annually. If Ben leaves the money in the account for 12 years, how much interest will he earn?

$2184

200

Decimals → Percents

0.385

38.5%

200

An item is regularly priced at $540.  The sales tax is 6%  How much money is the tax?

$32.40

200

22 is 44% of what number?

50

200

A new boat being built was supposed to be 188 meters long. It actually was 162 meters. What was the percent error?

16%

200

Hector took out a small loan of $900 for 18 months. The simple interest rate on the loan was 10.5%. How much will he pay in interest on the loan?

$141.75

300

Percents  →  Decimals 

4.75%

0.0475

300

How much would you spend at a restaurant if your bill is $45.60 and you leave an 18% tip?

$53.81

300

What percent of 50 is 4?

8%

300

An overconfident student thought they would finish the Math MCAS in 139 minutes. It took them 385 minutes to finish the test. By what percent were they wrong?

63.9%

300

Steph took out a simple interest loan that charges 8.5% interest annually. If her original loan amount was for $30,000 and she is paying off the loan over 20 years, how much will she pay altogether?

$81,000

400

Fractions → Percents

5/16

31.25%

400

An item is regularly priced at $25. It is on sale for 30% off the regular price. What is the new cost of the item?

$17.50

400

40% of what number is 8?

20

400

A mountain climber thought the top of the mountain was at 5377 feet. It turned out to only be 4359 feet tall. By what percent was the climber wrong?

23.4%

400

Todd takes out a student loan for $25,000. The annual simple interest rate on the loan is 7.75%. If Todd will be paying $38,750 in interest alone, how many years is he taking to pay off the loan?

20 years

500

Percents → Decimals → Fractions  

27.5%

0.275 & 11/40

500

A family bought some new camping gear at REI that totaled $318.50. They have a coupon for 30% off, then pay 7.5% sales tax on the new cost. How much do they pay for the gear?

$239.67

500

You have paid your car loan down to $8750, which is 43% of the original loan amount. What was the original loan amount?

$20,348.84

500

A family thought they could sell their house for $150,000. They only sold it for $135,000. What percent were they off by?

11.1%

500

Derek deposited $3,000 in a simple interest account 3 years ago. He has earned $360 in interest so far. What is the interest rate for his account?

4%

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