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Maths dictionary

What is an exponent?

An exponent, or power, tells you how many times to multiply a number by itself.

Definition

An exponent, or power, tells you how many times to multiply a number by itself.

Example

2⁵ means 2 × 2 × 2 × 2 × 2 = 32. The 2 is the base and the 5 is the exponent.

Tip

To multiply powers with the same base, add the exponents.

Practise it

Quick check: try these

Work each one out on paper, then tap the question to see the answer.

  1. (7^5)^2 = 7^___

    Answer: 10

  2. 2^2 × 2^3 = 2^___

    Answer: 5

  3. 4^6 × 4^2 = 4^___

    Answer: 8

  4. 4^6 × 4^6 = 4^___

    Answer: 12

Learn it in depth

Exponent (power) is part of Exponents and Powers for Class 8: notes, formulas, solved examples with every step, common mistakes and ten practice questions with answers. Want a teacher to go through it with you? See Class 8 maths tuition.

Related words

Square number, Cube number

FAQ

Exponent (power): questions

What is an exponent?

An exponent, or power, tells you how many times to multiply a number by itself. 2⁵ means 2 × 2 × 2 × 2 × 2 = 32. The 2 is the base and the 5 is the exponent.

What is a common mistake with exponent (power)?

To multiply powers with the same base, add the exponents.

Where do students learn exponent (power)?

Exponents and Powers is usually taught in Class 8, and the ideas come back in later classes. Chapter names and order differ by board and textbook, so follow your own textbook. We have a full page with notes, solved examples and practice questions.

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Try it now: Laws of exponents

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Laws of exponents (Grade 8): Multiplying, dividing and raising powers of the same base. Open the practice page or print a worksheet.

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