Using the SUM Function
The SUM function totals a range of values. The syntax for this function is =SUM (range of values to total). An example might be =SUM(B7:D7).
Type the equal (=) sign in the cell where you want to place the sum of values.
Type the function name SUM.
Type the open parentheses symbol.
Type the range to be totaled, such as B7:D7 ...
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