UPSKILL MATH PLUS

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5. Percentage: Important points to remember

To convert a fraction into a percent we multiply the fraction by $100$.
To convert a ratio into a percent, we write it as a fraction and multiply it by $100$.
To convert a decimal into a percent, we shift the decimal point two places to the right or multiply that by $100$.
To convert a percent into a fraction, we remove the percent sign($\%$) and divide it by $100$.
To convert a percent into a ratio, we remove the percent sign($\%$) and form a ratio with the remaining number as the first term and $100$ as the second term.
To convert a percent into a decimal, we remove the percent sign($\%$) and shift the decimal points two places to the left.
To express $x$ as a percentage of $y$; percentage $=$ $[\frac{x}{y} \times 100] %$ .
If $x$$\%$of a quantity is $y$, then Whole quantity $=$ $[\frac{y}{x} \times 100] %$ .

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