Microsoft Excel 2010. Excel Spreadsheet. Microsoft Excel is an electronic spreadsheet. As with a paper spreadsheet, you can use Excel to organize your data into rows and columns and to perform mathematical calculations. The Microsoft Excel Window. Excel Worksheets.
You can also select an area by holding down the left mouse button and dragging the mouse over the area.
Type C1:C3 in the Number1 field, if it does not automatically appear.
Click OK. The sum of cells C1 to C3, which is 300, appears.
Further information can be found by selecting help from