Count the number of digits after the decimal point. The denominator is 1 followed by the same number of 0s.
So, for example, 12.0356 has 4 digits after the decimal place. Therefore the denominator is 10000, and the rational form is 120356/10000
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The denominator of the fraction is determined by the number of decimal places in the decimal number. If there is one decimal place, the denominator will be 10. If there are two decimal places, the denominator will be 100, and so on.
For 0.4279, the denominator would be 10000.
by dividing the denominator from the numerator .
by dividing the numerator by the denominator
you divide the numerator by the denominator on you will get a decimal and you write it 00.00 that is a decimal