fx-82MS fx-82TL
d/c
On a Casio calculator you can generate an improper fraction
a b/c
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Example 1
To convert 2.75 to the improper fraction
2 • 7 5 = 2.75
2.75a b/c 2.75
11┘4.
and to convert it to the mixed fraction 
press
a b/c 2.75
2┘3┘4.
The conversion can take as long as two seconds.
Exemple 2
To convert the mixed fraction 2 ½ in the improper fraction 5/2 and convert this also in the decimal value 2.5
2 a b/c 1 a b/c 2 = a b/c 2┘1┘2
5┘2.a b/c 2┘1┘2
2.5
Math ERROR
An error message occurs if you try to input a mixed fraction while the d/c display format is selected.