Simple
Interest
Tax &
Gratuity (Tip)
Discounts &
Commission
Percent Error & Mixed Percent Problems
Spiral
Back
100

What is 5% as a decimal?

a. 5.0

b. .5

c. .05

d. .005

What is choice C, .05?

100

Mrs. Maratea bought classroom supplies Target for $258.40.  If the sales tax is 8%, how much will she pay in tax?

What is $20.67?

100

Vlad bought a bike that was 25% off the regular price of $950.  What was the sales price?

What is $712.50?

100

In science class, a group of students had to weigh a 250 gram rock on a balance scare.  Jennifer had a 7% error? What are two possible weights Jennifer could have gotten?

What are 267.5 grams and 232.5 grams?

100

7 + (-5) 

What is 2?

200

Dan borrowed $1200 from the bank for one year at a simple interest rate of 12%.  How much interest will he owe?

What is $144?

200

Laila purchased a new computer for $1,250 at the Apple Store.  If the sales tax is 7.5%, what is the total cost of her purchase?

What is $1,343.75?

200

A backpack is on sale for $48.  This is 40% off the original price.  What is the original price of the backpack? 

What is $80? 

200

The vet weighed Sonny, Mrs. Maratea's puppy on a broken scale.  The vet said Sonny weighed 29 pounds, but Mrs. Maratea knows that Sonny weighs 27 pounds.  What was the vets percent error? Round to the nearest percent.

What is 7.4%?

200

8 - (-7) 

What is 15?

300

Jackie deposited $2000 in a savings account that earns 6.5% simple interest.  She didn't make any deposits or withdrawals? How much in will be in Jackie's savings account after 3 years? 

a. $390

b. $2390

c. $3900

d. $5900

What is choice B, $2390?

300

The Chen family went to Chili's for dinner.  Their bill was $68.65.  If they gave their sever an 20% tip, how much did the server get?

What is $13.73?

300

Salesman Randy gets paid each month by commission only. He gets 4.5% of his sales.  If his total sales this month were $30,000, how much did he earn this month?

a. $31,350.

b. $13,500

c. $1,350

d. $450

What is answer choice C, $1,350?

300

Jim overestimated the amount of people coming to a job interview by 30%.  20 people showed up.  How many did Jim estimate there would be?

What is 26 people?

300

If you drove 612 miles in 9 hours, how many miles did you travel per hour?

What is 68 mph?

400

If you invested $1500 into an account.  The account earned $300 in simple interest in 4 years.  What is the annual interest rate?

a. .05%

b. .5%

c. 5%

d. 20%

What is choice C, 5%?

400

Danny's service charge at the gas station for a car wash and oil change was $53.04.  The sales tax rate was 8.5%.  If he add a 15% tip before tax, how much did he pay in total? 

a. $61.00

b. $57.55

c. $66.18

d. $65.51

What is choice D, $65.51?

400

Mary earns a salary of $500 per week.  She also gets paid a commission for what she sells.  Last week her total earnings was $840.  Determine the percent of commission she earned from selling $17,000 worth of merchandise.  

What is 2%?

400

Which number is greater than 1?

a. 1.10%

b. 95%

c. 67.5%

d. 140%

What is choice D, 140%

400

Which of the following expressions is equivalent to? 

-6(-7m + 5)

a. -42m + 5

b. 42m + 30

c. 42m - 30 

d. -42m + 30

What is choice C?

500

James borrowed $5000 for 5 years. The total amount he paid back at the end of the 5 years was $6850.  What interest rate did he pay? 

What is 7.4%?

500

Justin and Johnny went to lunch.  If they each bought a soda for $2.50 and a sandwich for $5.25. There was a 6% tax added to the bill and then they they tipped 20%. What was the total bill?

What is $19.72?

500

Brandon's weekly salary is $750.  He also earns 6% commission on his sales.  Last week his total earnings was $1,180. What were Brandon's sales? Round to the nearest dollar.  

What is $7,167?

500

Which number is not equivalent to the others? 

a. 325%

b. 0.325

c. 3 1/4

d. 3 25/100

What is choice B, 0.325?

500

A recipe for homemade brownies calls for 1 2/3 cups of cocoa and 2 1/3 cups of sugar.  If you plan to bake with 3 cups of cocao, how many cups of sugar will you need? 

What is 4 2/3 cups of sugar?

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