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Percent Problems involving Simple Interest



Videos, worksheets, and solutions to help Grade 8 students learn how to solve percent problems involving simple interest.

What is the Simple Interest Formula?
Simple Interest = principal × rate × time
I = P × r × t

How to use the Simple Interest Formula?
Solve word problems using the "interest" formula, which states: interest = principal × rate × time



In this tutorial, we demonstrate how to use the formula for simple interest, I = Prt.
Understanding Simple Interest and Compound Interest
This video makes clear the difference between simple interest and compound interest.


Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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