ROUND function
Rounds a number to a specified number of digits.
Syntax
ROUND(number,num_digits)
Number Is the number you want to round.
Num_digits Specifies the number of digits to which you want to round the number.
Remarks

If num_digits is greater than 0 (zero), then number is rounded to the specified number of decimal places.

If num_digits is 0, then number is rounded to the nearest integer.

If num_digits is less than 0, then number is rounded to the left of the decimal point.
Examples
Formula 
Description (Result) 
=ROUND(2.15, 1) 
Rounds 2.15 to one decimal place (2.2) 
=ROUND(2.149, 1) 
Rounds 2.149 to one decimal place (2.1) 
=ROUND(1.475, 2) 
Rounds 1.475 to two decimal places (1.48) 
=ROUND(21.5, 1) 
Rounds 21.5 to one decimal place to the left of the decimal point (20) 