Percent Applications Review

Karen invested $800 in a savings account that earns an annual simple interest rate of 4%. She keeps the money in the account for 2 years.

Find the amount of interest she will earn.

• $64

• $6,400

• $32

• $3,200

Tags

CCSS.HSF.BF.A.2

Michelle sells cars for a living.

She earns 8% commission on all the cars that she sells plus a monthly salary of $250.

This month she sold 2 cars for a total of $19,500.

How much total money did Michelle make for this month?

• $20

• $250

• $1,560

• $1,810

Tags

CCSS.6.EE.B.6

In science class, Kevin measured the mass of an object to be 24 grams. The actual mass of the object was 30 grams.

Find the percent of error in Kevin’s measurement.

• 6%

• 20%

• 25%

• 80%

Tags

CCSS.6.RP.A.3C

Change 9.25% to a decimal.

• 9.25

• 925

• 0.925

• 0.0925

Tags

CCSS.7.EE.B.3

CCSS.7.RP.A.3

CCSS.7.NS.A.2

Josh needs to buy a new soccer ball to practice for his summer league. Find the total cost of a $17.75 soccer ball after the sales tax of 6% is included.

Round all answers to the nearest cent. (That’s hundredth.)

• $16.68

• $1.07

• $18.82

• $17.81

Tags

CCSS.6.RP.A.3C

Kelly wants to buy a new tennis racket. At the store she found a $69.50 tennis racket that is on sale for 20% off the regular price. Find the sale price after the discount is included. Round all answers to the nearest cent. (That’s hundredth.)

• $83.40

• $55.60

• $89.50

• $13.90

Tags

CCSS.6.RP.A.3C

Sarah needs to calculate the total cost of a new book after a 9% sales tax is included. Let x represent the cost of the book.

Write an algebraic expression to show the total cost of the book after sales tax is included.

• 1.09x

• 0.09x

• 0.91x

• 9x

Tags

CCSS.HSA-SSE.A.1A

Mark’s grade on the first math exam was 94. His grade on the second math exam was 87.

What was the percent of change in Mark’s grade? Round your answer to the nearest whole percent?

• 108%

• 93%

• 8%

• 7%

Tags

CCSS.6.RP.A.3C

Paula found a sweatshirt that costs $76. The sweatshirt is on sale for 25% off the original price.

What is the amount of the discount on this sweatshirt?

• $19

• $95

• $57

• $51

Tags

CCSS.6.RP.A.3C

Linda went out to lunch and the total bill was $24. She left a 15% tip for the server.

What is the total amount, including the tip, that Linda paid for lunch?

• $3.60

• $20.40

• $27.60

• $39

Tags

CCSS.6.RP.A.3C