You have to divide the denominator by the numerator. Then if there's a remainder then that is going to be the numerator on the right side of the whole number.
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There isn't one. You can only make an improper fraction from a mixed fraction, which a whole number with a fraction on its side
To convert an improper fraction to a mixed number, divide the denominator into the numerator. The answer is the whole number. Put any remainder over the original denominator to create the fraction part.
Everything before a decimal point is the whole number. The part after it will be a fraction. 0.25 is the same as 1/4 so the above integer is 3 1/2 . To make the whole thing improper in its simplest form, you multiply the denominator by the whole number and add the numerator: 2 (denominator) x 3 (whole number) + 1 (numerator). The answer is 7/2
To take a mixed or proper fraction and make it an improper fraction simply keep the denominator the same (in this case 10) and multiply it by the whole number (in this case 1) and then add that number to the numerator (in this case 4) So 10 x 1 = 10 + 4 = 14. Keeping the denominator the same the improper fraction of 1 and 4/10 would be: 14/10.
The improper fraction for 2 and 1/6 is found by first multiplying the denominator, 6, by the whole number, 2, which equals 12, and then adding the numerator, 1, to the product, which results in 13. Then we take the denominator, 6, and make it the denominator for 13, which then gives us the improper fraction of 13/6.