To ignore all numbers stored as text, you need to open the Data tab and select the Text to Columns option. Then, select the Delimited option from the Convert Text to Columns wizard.

Excel's Convert Text to Columns Wizard works only on one column at a time. If the data is in the first column, for example, click on the letter "A" above the column to select the entire column.

Excel filters help you find exactly what you want, no matter how big your spreadsheet database is. Here's how to set number, text and data filters.