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What is the value of (90^2)?
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Answer and explanation
Correct answer: 8100
We need to find the square of 90: \(90^2 = 90 \times 90 = (9 \times 10)^2 = 81 \times 100 = 8100\). Therefore, the correct answer is 8100. The value 900 is not the square of 90; it equals \(90 \times 10\). Exam tip: when a number ends in one zero, its square ends in two zeros.
Frequently asked questions
What is the correct answer to this question?
8100
Why is this the correct answer?
We need to find the square of 90: \(90^2 = 90 \times 90 = (9 \times 10)^2 = 81 \times 100 = 8100\). Therefore, the correct answer is 8100. The value 900 is not the square of 90; it equals \(90 \times 10\). Exam tip: when a number ends in one zero, its square ends in two zeros.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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