might you happen to mean "improper fraction"? In that case, multiply the larger number to the left by the denominator of the fraction, then add this to the numerator above the original denominator.
Example:
3 2/5 = 17/5
626 is an integer: it is neither a mixed number nor a fraction.
264 is an integer; it is neither a fraction not a mixed number.
425 is an integer, not a fraction nor a mixed number.
263 is an integer, not a fraction nor a mixed number.
310 is an integer: it is neither a fraction not a mixed number.
750 is an integer, not a fraction or mixed number.
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.
Fraction: -11/10 Mixed number: = -11/10
283 is an integer, not a mixed number or fraction.
626 is an integer: it is neither a mixed number nor a fraction.
As a fraction . . . . . 355/1 As a mixed number . . . . . 3550/17 or 355.000
142 is an integer, not a fraction nor a mixed number.
264 is an integer; it is neither a fraction not a mixed number.
425 is an integer, not a fraction nor a mixed number.
263 is an integer, not a fraction nor a mixed number.
310 is an integer: it is neither a fraction not a mixed number.
It is 175/1 as a fraction and 175 as a whole number. There is no sensible way to write it as a mixed number.