Casio PV-S460/PV-S660 - Manual (Page 79)

Chapter 6 Currency Converter
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4. Tap a button at the bottom of the screen to specify the rounding method.
•
The rounding method you select is applied for all currency conversion
calculations involving a currency for which you specified 0 or 2 decimal
places in step 3, above.
Cut: Cuts off the decimal part to the specified number of places.
5/4: Rounds off the decimal part to the specified number of places.
Up: Rounds up the decimal part to the specified number of places.
5. After everything is the way you want, tap Set.