This is a FAQ.
You can find the Perl FAQ at perlfaq4 (alternative), but you can also search it locally by entering perldoc -q question at the command prompt, in your example:
perldoc -q round
Of course, your question makes me want to start off on the rant about which train of thought makes people ask this question without showing what they've tried already, but this great rant has already been made by people much better at Perl and ranting than I will ever be.
Update:
In reply to Re: Rounding a number?
by Corion
in thread Rounding a number?
by Anonymous Monk
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