ABS()
Array()
ASC()
CHR()
CInt()
CStr()
Date()
DateAdd()
DateDiff()
DatePart()
DateSerial()
DateValue()
Day()
Fix()
FormatCurrency()
FormatDateTime()
FormatNumber()
FormatPercent()
Hour()
InStr()
InStrRev()
Int()
IsArray()
IsDate()
IsEmpty()
IsNull()
IsNumeric()
IsObject()
Join()
LBound()
LCase()
Left()
Len()
LTrim()
Mid()
Minute()
Month()
MonthName()
Now()
Replace()
RGB()
Right()
Rnd()
Round()
RTrim()
Second()
Space()
Split()
Sqr()
strComp()
String()
StrReverse()
Time()
TimeSerial()
TimeValue()
TypeName()
UBound()
UCase()
VarType()
WeekDay()
WeekDayName()
Year()

Returns an expression formatted as a number

String

FormatNumber(Expression [, Digit [, LeadingDigit [, Paren [, GroupDigit]]]])

"Expression" is a valid numeric expression;
"Digit" is an optional numeric value used to indicate number of digits to the right of the decimal point;
"LeadingDigit" is an optional tristate value to display a leading zero;
"Paren" is an optional tristat

response.write FormatNumber(45.324567, 3)

45.325