Chapter 9 · Class 8 ICSE · Formula Sheet

Compound Interest Formulas — Class 8 ICSE

Learn compound interest formula and solve problems on compounded amounts and rates.

Key Formulas

Amount (Annual)

A = P\left(1 + \dfrac{R}{100}\right)^n

CI

\text{CI} = A - P

Half-Yearly

A = P\left(1 + \dfrac{R}{200}\right)^{2n}

Quarterly

A = P\left(1 + \dfrac{R}{400}\right)^{4n}

Worked Examples

1Using: Application

Apply the key formula from this topic to a sample problem.

Step 1: Identify the formula.

Step 2: Substitute the values.

Step 3: Simplify to get the answer.

Answer: See solution above

Practice Now

Apply these formulas with 60+ practice questions and AI-powered doubt clearing.

Practice Now

More Class 8 ICSE Formulas

Rational NumbersExponents & PowersSquares & Square RootsCubes & Cube RootsAlgebraic ExpressionsFactorization

Frequently Asked Questions

How many formulas are in Class 8 ICSE Compound Interest?+
There are 4 formulas in the Compound Interest chapter for Class 8 ICSE. Each formula is essential for solving problems in this topic.
How to remember Compound Interest formulas easily?+
Practice regularly with worked examples, group related formulas together, and use SparkEd's interactive practice mode to reinforce your memory through problem-solving.
Are these Compound Interest formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 8 syllabus for Compound Interest. Practice applying them to different types of questions for full exam readiness.

Master Compound Interest on SparkEd

Go beyond formulas. Practice at three difficulty levels with instant feedback, step-by-step solutions, and an AI coach.

Start Practising Free

SparkEd Maths provides free formula sheets for Class 1-10 across 7 education boards. All formulas are aligned to the 2025-26 syllabus.