Casio FX-55 Individual Calculator

It converts between mixed and improper fractions instantly and converts between decimal values and fractions at the touch of a key.

It rounds mixed numbers to the closet whole number and is capable of fixing the number of decimal places from 0 to 8.

The integer division with remainder shows the quotient and remainder on the same screen.

True factor display shows numerator over denominator just as it is written in textbooks.

The simplification key reduces fractions step by step to their lowest common denominator and displays the reduction factor too.