Remove Trailing Zeros in a Decimal

I have Number fields in an Adobe Acrobat form that need to be able to be entered as either a whole number or a decimal. Easy enough. I also need up to two decimal places shown, also easy. However, I can't figure out a way to hide the trailing zeros in a decimal in order to "clean up" the look of it. For example:

I type          What appears          I want

8.25            8.25                         8.25

22.7            22.70                       22.7

3                 3.00                         3

Does anyone know how to do this?

Thanks,