Name: ______Date: ______Class: ______

Study guide for exam 1C (Consumer Math)

For 1-3, solve for the missing value and state if the missing value is part, percent, or whole

  1. What is 40% of 80?
  1. What percent of 58 is 20.3?
  1. 30% of what number is 66?
  1. Samantha bought a bracelet for $35 and will need to pay 7% tax.
  1. How much tax will she pay? ______
  1. How much will she pay altogether? ______
  1. Jacob purchased a poster for $3.50 and pays 6% tax.
  1. How much tax will he pay? ______
  1. How much will he pay altogether? ______
  1. Ashley bought a package of markers for $6.25 and will pay 5% tax.
  1. How much tax will she pay? ______
  1. How much will she pay altogether? ______
  1. Cody sells cars at Mr. Baker’s car lot and gets paid 7% commission for each car he sells.
  2. If Cody sells a car for $18,000, then how much commission will he make?
  1. How much profit does Mr. Baker make on this car?
  1. Cameron earns 11% commission on each of the pieces of Jewelry that he sells at Kay Jewelers.
  2. If Cameron sells a ring for $250, then how much commission will he make?
  1. After commission, how much does Kay Jewelers make on this sale?
  1. Mary sold a guitar for $500 at The Guitar Center and is paid 12% commission on her sale.
  2. How much commission will Mary make?
  1. After commission, how much will The Guitar Center make on this sale?
  1. Ethan purchased a meal at Cracker Barrel for $9.25 and will leave a 15% tip for the waitress.
  1. How much will his tip be?
  1. How much will Ethan spend altogether?
  1. Donnie had his hair cut at Great Clips for $8 and he liked it so much that he decided leave a 14% tip.
  1. How much will his tip be?
  1. How much will Donnie spend altogether?
  1. Karen went to Red Lobster for supper and spent $19 on her meal. She decided to leave a 10% tip for the waitress.
  1. How much will her tip be?
  1. How much will she spend altogether?
  1. James put $1300 in a savings account that will draw 5% interest. Calculate how much interest he will have at the end of 12 years.
  1. Carry started a CD account at the bank with a deposit of $400 that will draw 8% interest.
  1. How much interest will she have at the end of 7 years?
  1. What will her balance be at the end of 7 years?
  1. An account has a principal of $500 and a simple interest rate of 3.8%. The table shows the simple interest earned and the new account balance for 1, 2, and 3 years. Complete the table for the fourth year. (Show all work.)

  1. Last year the debate club had 15 members. This year there are 19 members in the club. What is the percent change in the number of club members?

Is this percent increase or percent decrease? ______

  1. Jake ordered 28 large pizzas for the party. When the party was over he had 5 large pizzas remaining. What was the percent change in the number of large pizzas?

Is this percent increase or percent decrease? ______

  1. Suppose the original quantity is 139 and the new quantity is 124. What expression represents the percent decrease?
  1. 124-139

139

  1. 139-124

139

  1. 124-139

124

  1. 139-124

124

What is the percent decrease? ______

  1. Wal-Mart sells notebooks for $3.50. The cost of each notebook is $1.25. What is the percent markup for the notebooks?
  1. Lowes normally sells sinks for $225 and will be selling the sinks on clearance sale for $105. What is the percent markdown?
  1. A music store sells a CD for $15. The manager decides to markdown the price by 47%. How much is the CD now?
  1. Gary estimates that he will need 5 two by fours for his project. He actually used 4. What is his percent error?
  1. Joyce estimates that she will make 48 cookies with her recipe, but it actually made 46. What is her percent error?
  1. Tammy estimated that she would need 4 gallons of paint to paint her house. She needed 5 to paint all of her house. What is her percent error?