Google Docs now’ve tables in presentations, choose "Table" in the presentation editor. Once insert a table, you can easily add, select, and resize rows and columns with a single click, format and align text across, set background colors for your cells and borders. Your rows’ll grow to fit content as you type it and collaborators can edit same table simultaneously. Now, when you import tables from Microsoft Office PowerPoint they'll show up as editable tables in Google Docs.
More info: Google Support