Section 1
Discount
Property
An amount of discount is a percent off the original price.
In this Grade 7 lesson from Big Ideas Math, Course 2, Chapter 6, students learn how to calculate discounts and markups using percent of a number to find sale prices, original prices, and selling prices. Students apply two methods — subtracting the discount amount from the original price and multiplying by the remaining percent — as well as working backward from a sale price to find the original price using the percent proportion. Real-world contexts like retail pricing help students connect the concepts of discount and markup to everyday consumer math.
Section 1
Discount
An amount of discount is a percent off the original price.
Section 2
Finding Original Price from Sale Price
When given a sale price and discount percentage, the original price can be found using:
Where remaining percentage =
Section 3
Mark-up
The mark-up is the amount added to the wholesale price.
Expand to review the lesson summary and core properties.
Section 1
Discount
An amount of discount is a percent off the original price.
Section 2
Finding Original Price from Sale Price
When given a sale price and discount percentage, the original price can be found using:
Where remaining percentage =
Section 3
Mark-up
The mark-up is the amount added to the wholesale price.