Chapter 2 · Class 8 ICSE · Formula Sheet

Exponents & Powers Formulas — Class 8 ICSE

Apply laws of exponents to simplify expressions with negative and zero exponents.

Key Formulas

Negative Exponent

a^{-n} = \dfrac{1}{a^n}

Scientific Notation

a \times 10^n, \quad 1 \leq a < 10

All Laws

a^m \times a^n = a^{m+n}, \quad \dfrac{a^m}{a^n} = a^{m-n}, \quad (a^m)^n = a^{mn}

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

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More Class 8 ICSE Formulas

Rational NumbersSquares & Square RootsCubes & Cube RootsAlgebraic ExpressionsFactorizationLinear Equations in One Variable

Frequently Asked Questions

How many formulas are in Class 8 ICSE Exponents & Powers?+
There are 3 formulas in the Exponents & Powers chapter for Class 8 ICSE. Each formula is essential for solving problems in this topic.
How to remember Exponents & Powers 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 Exponents & Powers formulas enough for exams?+
Yes, these formulas cover the complete ICSE Class 8 syllabus for Exponents & Powers. Practice applying them to different types of questions for full exam readiness.

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