Click the Insert Table button on the Standard toolbar and select the number of rows and columns you want the table to have (for example, 4x4).
A table is inserted; click in it and type the text you want placed in the table. Use the Tab and arrow keys to move between the table cells, like in Excel.
INTRODUCTION
Sometimes you might need to add more to your presentation than just words. For example, you might want to display data or show relationships between numbers or totals. Creating a table in PowerPoint is one way to do this. You can insert a table directly into your slide and format it just as you would a Word table.
TIP
Adding Excel Worksheets
You can add Excel worksheets to your presentations as objects. To do so, open the Insert menu and select Object to open the Insert Object dialog box; then select Microsoft Excel Worksheet from the Object Type list (if you want to browse for a specific, already created worksheet file, select the Create from File option; otherwise, select Create New). Click the OK button.