Cuemath
Cuemath: Discounts
A comprehensive guide for learning all about discounts with definitions, how to calculate a discount, solved examples, and practice questions.
Cuemath
Cuemath: Profit and Loss
A comprehensive guide for learning all about profit and loss with definitions, selling price and cost price, how to calculate profit, profit and loss formula, solved examples, and practice questions.
Oswego City School District
Regents Exam Prep Center: Percents of Increase, Decrease, Discount
Use this lesson with examples in planning instruction on percent of increase, decrease, and discount. In this resource, you'll find three questions with solutions on ways to determine percent.
National Council of Teachers of Mathematics
The Math Forum: Markdown Savings
This site from the Drexel University contains problems for practicing using percents, using a mock sale as the motif. A link takes you to a model solution.