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Write $\frac{21}{50}$ as a decimal number.

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Convert between decimals and fractions

Full solution

Q. Write

\frac{21}{50}

as a decimal number.

Convert to decimal: Convert the fraction $\frac{21}{50}$ to a decimal by finding an equivalent fraction with $100$ as the denominator. $\newline$ To do this, we need to multiply both the numerator and the denominator by $2$ , because $50 \times 2 = 100$ . $\newline$ Calculation: $(21 \times 2) / (50 \times 2) = \frac{42}{100}$
Equivalent fraction calculation: Write $42/100$ as a decimal number. $\newline$ Since the denominator is $100$ , we can easily convert this to a decimal by moving the decimal point two places to the left. $\newline$ Calculation: $42 / 100 = 0.42$

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