Improper fractions can be written just the same i.e. 55/7 using the double-tap trick on the division symbol. Mixed fractions would be written as 3+3/4. You can also tap the Tip area (where the fraction results show) and change the fraction settings to show results as an improper fraction instead of the default representation.

Please add ability to input improper and mixed fractions, for example:

3-3/4 + 2-1/2 = 6-1/4

Can you elaborate on this a bit more? You can double-tap the division symbol to represent a fraction number like 1/2 or 1/25 ... CALC will also automatically convert decimals to fractions in the upper left corner of the results area ... can you please provide specifics on your particular needs? Thanks

Adding fractions would make my daily plan as a waiter a lot easier thanks