Start Word and open the document to which you want to add a spreadsheet. Select the "Insert" tab and click the "Object" drop-down arrow in the Text group. Click "Object." Select a worksheet option from the Object Type list, such as "Microsoft Excel 97-2003 Worksheet," and click "OK."

Click the “Insert” tab on the command ribbon, click the “Table” button to open a list, and then click “Excel Spreadsheet” to insert a table in the Word document. Click and drag the table to the preferred area in your Word document. Double-click the table to convert to an Excel worksheet.