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What is the rational fraction form of the decimal number 0.2?

Answer and explanation

Correct answer: \(\frac{1}{5}\)

There is one digit after the decimal point, so write 0.2 as a fraction with denominator 10: \(0.2=\frac{2}{10}=\frac{1}{5}\). Therefore, \(\frac{1}{5}\) is correct. The fraction \(\frac{2}{5}\) equals 0.4, not 0.2. Exam tip: the number of digits after the decimal determines the number of zeros in the denominator, such as 10, 100, or 1000.

Related tags

Rational NumbersDecimalsFractionsDecimal RepresentationNumber SystemsMathematicsClass 9 Mcq

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