Simple Interest and Compound Interest
Learn the difference between simple and compound interest and how each grows money over time. Let’s get started! 🚀

Video Lesson
Watch and learn the basics
Flashcards
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🛎️ How to Calculate Simple Interest?
- Interest is calculated using the formula Interest = Principal × rate × time (number of year).
- The principal does not change, so the interest is the same each year.
- The total amount is calculated using Total = Principal + Interest.
🛎️ How to Calculate Compound Interest?
- The total amount is calculated using Total = Principal × (1 + rate)ᵗ.
- Interest is added to the principal each year, so the amount keeps increasing.
- The interest is calculated using Interest = Total − Principal.
🛎️ Simple and Compound Compared
- Simple interest increases by the same amount each year.
- Compound interest increases faster over time because interest is added to the total.
- Compound interest is commonly used by banks.
Practice Questions
Test your understanding
Interactive Activity
Compare how different interest methods affect growth over time
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