1. Objective: Students will be able to solve problems involving discounts and sales tax.
VOCABULARY:
A discount is the difference between the original price and the sale price.
A sales tax is an amount added to the price of a purchase.

2. Change % to decimal and multiply 0.3 • 78 = $23.40 discount
A discount is the difference between the original price and the sale price.
Ms.Thomas bought a dress. The original price was $78, and it was discounted 30% off.
1. Find the discount
What is 30% of $78?
Change % to decimal and multiply
0.3 • 78 =
$23.40 discount
2. Subtract the discount from the original price.
$78.00
- $23.40
$54.60 is the sale price

3. Change % to a decimal and multiply 0.2 • 125 = $25.00 discount
A discount is the difference between the original price and the sale price.
Lou found a bat that had an original cost of $125, but it was marked down 20%. What is the sale price?
1. Find the discount
What is 20% of $125?
Change % to a decimal and multiply
0.2 • 125 =
2. Subtract the discount from the original price.
$25.00 discount
$125.00
- $ 25.00
$ is the sale price

4. A sales tax is an amount added to the price of a purchase.
A hotel cost $158 per night plus 11.3% sales tax. What is the total cost per night?
1. Find the tax
What is 11% of $158?
0.11 • 158 =
$17.38 sales tax
2. Add the sales tax to the original price.
$158.00
+ $ 17.38
$ is the total cost

5. A sales tax is an amount added to the price of a purchase.
You buy a stereo for $ What is you total cost if the sales tax is 7.25%?
1. Find the tax
What is 7.5% of $387.50?
0.075 • =
$28.09 sales tax
2. Add the sales tax to the original price.
$387.50
+ $ 29.06
$ is the total cost

6. YOU TRY IT!
Sally found a sofa that had a price tag of $450. It was marked 35% off. What is the total discount?
Sally decided to buy the sofa that was on sale.
The sales tax is 8.5%. Find the total cost of the sofa.