Excel has over 475 formulas in its Functions Library, but we've selected the most popular, from date and time functions to mathematics and simple data manipulation.

For example, if you wanted to find the total of all the data in column C, you would enter "SUM (C:C)" in the formula field. Press "Enter" to run the formula and calculate the sum of the selected ...

You can sum cells across multiple sheets in Excel. This article presents steps for Adding single-cell values or Adding values in the range of cells.

You can sum a series of numbers in Microsoft Excel manually by typing in a simple formula, or automatically with a tool.

SERIESSUM function returns the sum of a power series based on the formula. Learn how to use the SERIESSUM function in Excel.

Mathematics of Computation, Vol. 24, No. 109 (Jan., 1970), pp. 101-135 (35 pages) The Möbius inversion technique is applied to the Poisson summation formula. This results in expressions for the ...