Use the Auto Fill feature to fill cells with data that follows a pattern or are based on data in other cells. Note: This article explains how to automatically fill values into other cells. It does not explain how to enter data manually or simultaneously across multiple worksheets.

Use the ROW function to number rows. In the first cell of the range that you want to number, type =ROW (A1). The ROW function returns the number of the row that you reference. For example, =ROW (A1) returns the number 1. Drag the fill handle across the range that you want to fill.