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Simple interest worksheet — Grade 8

Simple interest

Free printable Grade 8 worksheet: Simple interest. 8 problems, increasing difficulty with star challenges. Instant PDF with answer key.

This worksheet provides challenging problems on simple interest tailored for Grade 8 students studying consumer math. Teachers can use it to deepen students' understanding of interest calculations and their applications in everyday financial situations. The exercises promote critical thinking and reinforce the formula I = PRT through practical examples.

Math
Grade 8
Middle School
Worksheets
Ages 11–14
medium

Learning objectives

  • Calculate simple interest using the formula I = PRT.
  • Interpret real-world scenarios involving simple interest in consumer math contexts.
  • Analyze and solve complex problems related to simple interest for financial decision-making.

Answer Key

Answer key for Simple interest — free printable Math worksheet

How to use this worksheet

  1. Click “Download Worksheet” to get the PDF — free with a KiwiBee account (up to 50 downloads a month).
  2. Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
  3. Use the included answer key to mark it in seconds.

Frequently asked questions

Is the “Simple interest” worksheet free?

Yes. “Simple interest” is a free printable Math worksheet. Sign in with a free KiwiBee account to download the PDF — it includes up to 50 downloads a month.

What grade or age is this Math worksheet for?

It's designed for Middle School (ages 11–14), covering Consumer math.

Does it come with an answer key?

Yes — a matching answer key is included so you can grade it in seconds.

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