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Subjects
Class 9MathematicsNumber SystemsExponentsMediumLevel 6
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What is the value of (27^2-229)?

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Answer and explanation

Correct answer: 500

First find the square of 27: \(27^2=27\times27=729\). Then \(729-229=500\). Therefore, the correct answer is 500. A result such as 550 may come from an error in subtraction. Exam tip: evaluate the exponent first, then perform addition or subtraction.

Related tags

ExponentsNumber SystemsSquaresArithmetic OperationsClass 9 Mathematics

Frequently asked questions

What is the correct answer to this question?

500

Why is this the correct answer?

First find the square of 27: \(27^2=27\times27=729\). Then \(729-229=500\). Therefore, the correct answer is 500. A result such as 550 may come from an error in subtraction. Exam tip: evaluate the exponent first, then perform addition or subtraction.

Which subject and chapter does this question cover?

This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.

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