SUM : Adds all the numbers in a range of cells. E,g SUM(3, 2) equals 5, If cells A2:E2 contain 5, 15, 30, 40, and 50: SUM(A2:C2) equals 50, SUM(B2:E2, 15) equals 150.
SUMIF : The SUMIF worksheet function checks for a value within a range and then ... |