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Chapter 9.6
Simple Interest: The Foundation of Financial Calculations
Unlock the power of simple interest calculations to understand loan costs, savings growth, and investment returns. Master this essential financial skill for smarter money management and informed decision-making.
What You'll Learn
Define interest as the cost of borrowing money and identify key terminology
Apply the simple interest formula I = P × R × T to calculate interest charges
Convert interest rates from percentages to decimals for accurate calculations
Calculate total repayment amounts by adding principal and interest together
Determine net profit by subtracting expenses from income in business scenarios
What You'll Practice
1
Calculating interest on loans with varying principals and rates
2
Finding total repayment amounts after one or more years
3
Converting annual percentage rates to decimal form
4
Solving multi-year interest problems with different time periods
5
Computing net profit from borrowed money in real-world scenarios
Why This Matters
Simple interest is essential for understanding loans, credit cards, and savings accounts you'll encounter throughout life. Whether you're borrowing money for college, a car, or starting a business, knowing how to calculate interest helps you make smart financial decisions and avoid costly surprises.
Before You Start — Make Sure You Can:
This Unit Includes
6 Video lessons
Practice exercises
Learning resources
Skills
Simple Interest
Interest Rate
Principal
Percentages
Decimal Conversion
Financial Literacy
Net Profit
