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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.
Khan Academy
Khan Academy: Markup and Commission Word Problems
Practice solving word problems involving price markups and commission fees. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.