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Add the values in a column or row by using a button. You can use AutoSum to quickly sum a range of numbers in a column or row. Click an empty cell below a column of numbers or to the right of a row of numbers, and then click AutoSum. Excel selects what it determines to be the most likely range of data.
To create a cell that automatically adds the cells that are filled in, place your cursor in the empty cell you wish to display your total. Hold down the Alt key and press =.. This activates Excel's AutoSum feature.Hold down the left mouse button and place your cursor in the top left cell (A1).ouble-click the file name to open the Excel spreadsheet of your choice. Hold down Ctrl and press A.. This highlights all cells in the worksheet. In the bottom right corner of the Excel window, look for Sum= followed by the total of all filled in cells in your worksheet.