Sum 1
Sum 1 : (ICT) A spreadsheet function. It is one of the most basic functions of a spreadsheet as it is designed to add up a range of numbers. For example: =SUM(A1:A5) will add up numbers in column A rows 1 to 5. Example: =SUM(A1:D5) will add up numbers in the grid top left cell A1 and bottom right D5