Fraction . . . 68/100
Fraction in simplest form . . . 17/25
Mixed number . . . A mixed number is a whole number plus a fraction. Since part of it is a whole number, a mixed number is always more than ' 1 '. But .68 is less than ' 1 ', so there's nothing you can do to it to make it a mixed number. It doesn't have what it takes.
The decimal 0.68 can be expressed as the fraction 25 17 in its simplest form. It cannot be written as a mixed number because it is less than 1. Thus, it only exists as a proper fraction.
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