1. Discount, Sales Tax , Tipping , Commission
Discount is an amount subtracted from the
original price.
Sales Tax is an amount added to the original
price.
Tip is an amount added to the original price.
Commission is an amount earned based on the original price.

2. 2) Multiply by the original amount
1) Change the percent to a decimal
2) Multiply by the original amount
3) Add or subtract, depending on what
is asked

3. Discount / Sales Tax Problems
A CD player that regularly sells for $79.00 is on sale at a 15% discount.
a) What is the sale price?
b) If the sales tax is 8%, what is the cost after
tax?
A bike that regularly sells for $179 is on sale at a
25% discount.
b) If the sales tax is 6.5%, what is the cost after

4. 3) A computer normally sells for $1,299.00, but is
discounted 10%.
a) What is the discount amount?
b) What is the sale price?
c) If the sales tax is 7%, what is the price after tax?
4) Mary buys a dress and a pair of shoes. Before adding
the tax, she pays $48 for the dress which normally
sells for $62, and she pays $34 for the shoes which
normally sell for $46.
a) Before tax, how much does Mary save by buying at
the sale price?
b) What percent discount did Mary get on each item?
c) Including a 6.5% sales tax, how much did Mary pay?

5. a ruler for $0.75, and a notebook for $3.00. Each item
5) Nate buys 3 pencils for $1.50, an eraser for $1.25,
a ruler for $0.75, and a notebook for $ Each item
is on sale for 50% off. Nate must pay 8% sales tax. How
much does Nate pay for the school supplies?
6) Molly buys a skirt that originally costs $ The skirt
is on sale for 30% off. When she pays for it, the
cashier tells her she can have an additional 25%
discount.
a) How much will Molly pay for the skirt?
b) Is there a difference between:
1) taking off each discount separately or
2) adding the two discounts together before taking
them off

6. he bought shoes regularly priced at $40 for 25% off,
7) Sammy buys his clothes at Super Discounts. On Saturday
he bought shoes regularly priced at $40 for 25% off,
and a jacket regularly priced at $100 for 30% off.
a) Before the sales tax, what was the total price?
b) What percent discount did Sammy get on his total
purchase?
8) John earns a 5% commission for each car he sells. On
Monday, he sells a car for $25,000. How much will
John earn on this sale?
9) Martha sells real estate. She earns a 12% commission
on each house she sells. In January, Martha sold a
house for $275,000. How much will Martha earn on
this sale?