Which is the expanded form of (3.209)?
Answer and explanation
Correct answer: \(3+\frac{2}{10}+\frac{9}{1000}\)
In 3.209, 3 is in the ones place, 2 is in the tenths place, and 9 is in the thousandths place. Therefore, its expanded form is \(3+\frac{2}{10}+\frac{9}{1000}\). In option B, the place values of 2 and 9 are interchanged, so it is incorrect. Exam tip: the first, second, and third digits after the decimal represent tenths, hundredths, and thousandths, respectively.
Frequently asked questions
What is the correct answer to this question?
\(3+\frac{2}{10}+\frac{9}{1000}\)
Why is this the correct answer?
In 3.209, 3 is in the ones place, 2 is in the tenths place, and 9 is in the thousandths place. Therefore, its expanded form is \(3+\frac{2}{10}+\frac{9}{1000}\). In option B, the place values of 2 and 9 are interchanged, so it is incorrect. Exam tip: the first, second, and third digits after the decimal represent tenths, hundredths, and thousandths, respectively.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Decimal representation.
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