Documentation/How Tos/Calc: SUM function
Sums the contents of cells.
SUM(number1; number2; ... number30)
number1 to number30 are up to 30 numbers or ranges of numbers whose sum is to be calculated.
SUM can also be used to sum cells where a specified condition is true - see Conditional Counting and Summation.
SUM(2; 3; 4)
- returns 9, because 2+3+4 = 9.
- (where cells B1, B2, B3 contain 1.1, 2.2, 3.3) returns 6.6.