Calculating Discounts and Sales Tax

Mr. Ziger's lesson on sales tax and discount covers calculating total cost with tax, finding sale prices after discounts, and determining original prices from sale prices. The lesson includes multiple examples and methods for solving these problems, emphasizing careful attention to calculations and understanding the concepts. Students are encouraged to review the material and complete additional exercises on the teacher's website.

What is the main focus of lesson 7-7?

• Understanding sales tax and discounts

• Studying geometry

• Learning about fractions

• Calculating interest rates

What is the first step in calculating the total cost of an item with sales tax?

• Subtract the tax from the price

• Multiply the price by the tax rate

• Divide the price by the tax rate

• Add the tax rate to the price

How do you find the total cost of an item after calculating the tax?

• Add the tax to the original price

• Multiply the tax by the original price

• Divide the tax by the original price

• Subtract the tax from the original price

What is the alternative method to calculate the total cost with tax in one step?

• Multiply the price by 100%

• Multiply the price by 107%

• Add 7% to the price

• Subtract 7% from the price

What is the regular price of the DVD player in Example 2?

• $150

• $225

• $175

• $200

How do you calculate the discount amount on an item?

• Divide the price by the discount rate

• Subtract the discount rate from the price

• Multiply the price by the discount rate

• Add the discount rate to the price

What is the sale price of the DVD player after a 20% discount?

• $140

• $150

• $160

• $175

In Example 3, what is the sale price of the rocking chair?

• $35.75

• $42.75

• $38.75

• $40.75

How do you determine the original price of an item given the sale price and discount percentage?

• Multiply the sale price by the discount percentage

• Subtract the discount percentage from the sale price

• Divide the sale price by the percentage you pay

• Add the discount percentage to the sale price

What percentage of the original price do you pay if an item is 15% off?

• 80%

• 90%

• 75%

• 85%