If you have scratches on a wooden table, the easiest way to remove them is to finely sand the area with a soft grade sandpaper, such as 100 grit or higher. Once you've lightly sanded, you can polish the area with a rubbing compound or special oil made for wood surfaces. If the scratches are deep, you may consider filling them with a matching wood putty before sanding, so that the marks are removed and the surface is smooth after sanding and polishing.