What is the value of (80^2)?
Answer and explanation
Correct answer: 6400
We need to find the square of 80: \(80^2 = 80 \times 80 = 6400\). Therefore, 6400 is correct. The value 640 is only \(8^2\) with one zero added incorrectly; multiplying two factors of 80 gives two zeros in the product. Exam tip: for squares of numbers such as 80, square 8 first and then append two zeros.
Frequently asked questions
What is the correct answer to this question?
6400
Why is this the correct answer?
We need to find the square of 80: \(80^2 = 80 \times 80 = 6400\). Therefore, 6400 is correct. The value 640 is only \(8^2\) with one zero added incorrectly; multiplying two factors of 80 gives two zeros in the product. Exam tip: for squares of numbers such as 80, square 8 first and then append 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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