CK-12 Foundation
Ck 12: Arithmetic: Percent of Change Grades 8 9
[Free Registration/Login may be required to access all resource tools.] Learn how to solve real-world problems involving percentages.
CK-12 Foundation
Ck 12: Arithmetic: Prices Involving Discounts Grade 6
[Free Registration/Login may be required to access all resource tools.] Find percentages of a total price in order to determine a discount.