Percent to Decimal to Fraction
Percent Problems
Percent Change/Percent Error
Sales Tax, Tip, Discount
Simple Interest
100

Convert 120% to a fraction.

What is 120/100 or 12/10 or 6/5 or 1 1/5?

100

If 12 out of 25 people like blue jolly ranchers. What percent of people like blue jolly ranchers?

What is 48% of people?

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? State whether this is an increase or a decrease.

What is a 25% increase.

100

How much would a bicycle cost if it were marked down 15% from its original price of $289?

What is $245.65?

100

Name the simple interest formula and state what each variable stands for.

What is I = prt I = interest, p = principal, r = % as a decimal, and t = time in years?

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

The local bakery sells 150 donuts a day. If 70% if these donuts are sold in the morning, how many donuts are sold in the morning?

What is 105 donuts?

200

On Tuesday, Nash made 231 free throws on Wednesday he made 258 free throws. What is the percent change in his free throws? Round to the nearest percent. State whether this is increase or decrease.

What is about a 12% increase?

200

If a sweater costs $37.99, and the sales tax is 6%, what is the total price of the sweater?

What is $40.27?

200

If you invest $1200 in an account that pays 13.2% simple interest, what is the balance of the account after 4 years?

What is $633.60?

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

0.5% of all statistics are true. If you have a list of 1,400 statistics. How many are true?

What is 7 statistics?

300

Al's Quick Mart sells milk for $1.99 per gallon, but they used to sell it for $2.79. What is the percent change in the price? Round to the nearest whole percent. State whether this is increase or decrease.

What is about a 29% decrease?

300

A certain container of mouthwash usually costs $2.99 at a store. If it is on sale for 20% off, how much does the mouthwash cost now?

What is $2.39?

300

If you buy a necklace for $400 on your credit card, which charges 21.3% simple interest, how much interest will be added after 5 years?

What is $426.00?

400
Convert 3.1 to a percent
What is 310%
400

A store paid $75.29 for a couch. To make a profit, the store charged 270% of the cost. What is the price tag the store puts on the couch?

What is $203.28?

400

A custom estimates a computer at an electronics store is $1099. Determine the percent of error in price if the actual price is $1349. Round to the nearest whole percent.

What is about 19%?

400

A pre-owned car costing $8,995 was sold with a markup of 15%. Find the final price of the car.

What is $10,344.25?

400

Find the interest earned if you place $76.43 into an account that pays 21.5% simple interest, and leave it in for 6 months. (Be careful!)

What is $8.22?

500

Convert 21/35 to a decimal

What is 0.6?

500

A football team won 75% of 120 games over 10 seasons. How many games did the football team lose?

What is 30 games?

500

A student estimates the mass of an object to be 325g. The actual mass is 342g. What is the percent error of the student's calculation?

What is 5%?

500

John bought 4 Chick-fil-A Deluxe meals. Each meal was usually $10.90, but was on sale for 20% off. How much did Jolene spend on all 4 Deluxe meals before tax?

What is $34.88?

500

If you take out a loan for $550 at 7.2% simple interest and make no payments for 6 years, how much do you owe total?

What is $737.60?

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