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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.
Insert or delete cells, rows, and columns. You can insert blank cells above or to the left of the active cell on a worksheet. When you insert blank cells, Excel shifts other cells in the same column down or cells in the same row to the right to accommodate the new cells.Similarly, you can insert rows above a selected row and columns to the left of a selected column. You can also delete cells, rows, and columns.ip To cancel a selection of cells, click any cell on the worksheet. On the Home tab, in the Cells group, click the arrow next to Insert, and then click Insert Sheet Columns. Tip You can also right-click the selected cells and then click Insert.