Chapter 6 Percents OST Review (7th grade)

Cait purchases a $20 item at a store. She uses a coupon to receive a 15% discount, and she pays a 6% sales tax on the item. She calculates the total cost, in dollars, of the item using the expression shown.

Part A. What is the error in the expression Cait used for her calculation?

• She applied the sales tax before the discount.

• She applied the discount as an increase versus decrease in price.

• She did not apply the sales tax.

• She did not apply the discount.

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2017 #16 Part A

Cait purchases a $20 item at a store. She uses a coupon to receive a 15% discount, and she pays a 6% sales tax on the item. She calculates the total cost, in dollars, of the item using the expression shown.

Part B. How would you calculate the total cost of Cait’s purchase?

• (0.85)(1.06)(20) =$18.02

• (1.15)(1.06)(20) =$24.38

• (0.15)(0.06)(20) =$0.18

• (0.85)(0.06)(1)(20) =$1.02

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2017 #16 Part B

Ben has a coupon for an additional 15% off the sale price of any item in a store. He uses his coupon to buy a shirt whose sale price is already 20% off the original price. He pays $14.96, and there is no sales tax.

What is the original price of the shirt?

Mathematical Equivalence

ON

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Practice Test #22

Pete and Teagan each put the same amount of money in a new bank account. Teagan’s account earns 2.75% simple interest, and she earned $2.20 in interest after one year. Pete’s account earns 5% simple interest.

How much interest did Pete earn in his account after one year?

Mathematical Equivalence

ON

Sam is collecting money for an animal shelter. He collects $150.00 each day for 6 days. The shelter will use 35% of the money he collects to buy pet food. The rest of the money will be used to buy cleaning supplies.

How much of the money that Sam collects will be used to buy cleaning supplies?

Mathematical Equivalence

ON

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2021 #46

A company collects data on its employees. It finds that 20% of employees in each department are part-time, 80% of employees in each department are full-time, and each of the company’s four departments has 45 employees.

How many part-time employees does the company have?

Mathematical Equivalence

ON

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2022 #37

A company collects data on its employees. It finds that 20% of employees in each department are part-time, 80% of employees in each department are full-time, and each of the company’s four departments has 45 employees.

How many full-time employees does the company have?

Mathematical Equivalence

ON

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2022 #37

Terri shops at a store where all items are on sale for 20% off. One of the items she wants to buy had an original price of $40.00.

Select a value to complete the statement that describes the sale price.

The sale price is equal to 40 times (a)   .

• 0.20

• 20

• 80

• 0.80

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2023 #14

Jeremy places an order for 200 headsets from a supplier for his store. The cost of each headset is $44.50. Jeremy pays 25% of the total amount at the time of placing the order. He needs to pay the remaining amount at the time of delivery.

What amount does Jeremy need to pay at the time of delivery?

Mathematical Equivalence

ON

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2023 #31