7.4 The student will solve consumer-application problems involving tips, discounts, sales tax, and simple interest.

More Online Practice

Hands-On Activities

Other Web Sites

  • Gomath This is a good practice site to solve simple interest problems.
  • StudyZone The notes are from the Oswego.org site. The notes on sales tax and tip are in the "Sales Tax" portion of the site and the discount notes are in the "Percent of a Number" portion of the site.
  • ExploreLearning Students can self-enroll but need to get the enrollment code from their teachers. Teachers have to assign the Multiplying decimals to their classes.
  • Larson´s Software This is server-based software and students need to be enrolled by their teachers. Click on the Percents, then click on Solving Percent Equations.

Lesson 2-2: Consumer-Application Problems


Simple Interest calculator.
Enter the principle (starting amount), the number of years and interest rate (enter 0.05 % as 5).



The Simple Interest Applet. Written by Grant Benedict, October 1, 1998