To insert a single column: Right-click the whole column to the right of where you want to add the new column, and then select Insert Columns. To insert multiple columns: Select the same number of …

If you need to sum a column or row of numbers, let Excel do the math for you. Select a cell next to the numbers you want to sum, select AutoSum on the Home tab, press Enter, and you're done.

One quick and easy way to add values in Excel is to use AutoSum. Just select an empty cell directly below a column of data, then on the Formula tab, select AutoSum > Sum.

To insert a column, pick any cell in the table and right-click. In the example shown below for rows, a row will be inserted above row 3. For columns, if you have a cell selected in the table's rightmost column, …

To add a list of numbers, select the cell below a column of numbers, and then click AutoSum.

Try it! When your table needs more data, add rows and columns, or remove them to get rid of empty cells. Add a row Select a cell. Select the Table Tools Layout tab > Insert Above or Insert Below. Add …

Use AutoFilter or built-in comparison operators like "greater than" and "top 10" in Excel to show the data you want and hide the rest. Once you filter data in a range of cells or table, you can either reapply a …

Adding and subtracting in Excel is easy; you just have to create a simple formula to do it. Just remember that all formulas in Excel begin with an equal sign (=), and you can use the formula bar to create them.

When your data is in a table, then as you add or remove items from the list, any drop-downs you based on that table will automatically update. You don't need to do anything else.

You can quickly total data in an Excel table by enabling the Total Row option, and then use one of several functions that are provided in a drop-down list for each table column.