It's an ordinary task to round a number to 2 digits after decimal point. But sometimes one needs have a third digit '5' 
E.g.
0.0234  => 0.025
0.0482  => 0.05
0.0513  => 0.05
Here is a pretty snippet to make it
sub round_005 {
    return (sprintf '%0.2f', $_[0] * 2) / 2;
}
print "$_ => " . round_005($_) . "\n" for .234, .0482, .0513;

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In reply to rounding money value to a half of a cent by ccn

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