It's a million worksheets in one! Each sheet prints with grid lines to help students line up numbers and complete problems using the traditional algorithm. The "0" placeholders are already in place for beginners. Pressing the "F9" key on your computer keyboard will randomly change the numbers and provide a completely different worksheet. A free version of the 2 digit by 2 digit is available at the link below. Thanks for looking and please feel free to offer any suggestions.