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More Lessons for Grade 8

Math Worksheets

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

The Simple Interest Formula is

I = Prt

where I is interest, P is the principal or starting amount, r is the interest rate per year and t is the time the money is invested or borrowed in years.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other 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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