Square Roots and Cube Roots MCQs with Answers

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If $p$ is a prime number, then $\sqrt{p}$ is always an irrational number.

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The value closest to $\sqrt{2.3 \times 10^9}$ is $50{,}000$.

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The product simplifies to $15$ because $\sqrt{3} \times \sqrt{5} \times \sqrt{15} = \sqrt{3 \times 5 \times 15} = \sqrt{225} = 15$.

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The square root of $625$ is $25$, because $25^2 = 625$.

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$\sqrt{2}$ is an irrational number because it cannot be expressed as a fraction $\frac{p}{q}$ where $p$ and $q$ are integers with $q \neq 0$.

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The cube root of $0.000216$ is $0.06$.

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$81$ is a perfect square because $9 \times 9 = 81$, i.e., $81 = 9^2$, so the answer is $81$.

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The value of $\sqrt{144} \times \sqrt{49}$ is $84$.

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The cube root of $29791$ is $31$, since $31^3 = 31 \times 31 \times 31 = 29791$.

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The number of marbles in each row is the square root of $196$, which is $14$.