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What is the coordinate of the point represented by \(\sqrt{0.0225}\) on the number line?

Answer and explanation

Correct answer: \(0.15\)

\(0.0225=225/10000\), so \(\sqrt{0.0225}=15/100=0.15\), since \((0.15)^2=0.0225\). In option C, the decimal point is shifted one place too far to the left, making its square much smaller. Exam tip: For a decimal square root, convert the number into a fraction and take the square root of the numerator and denominator separately when both are perfect squares.

Related tags

PolynomialsNumber LineDecimal Square RootPlace ValueReal NumbersRepresenting Real Numbers On The Number LineMathematicsClass 10 Mcq

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