2 Digit Subtraction Students subtract 3 digit numbers with regrouping going through each step of the process. http://www.dositey.com/addsub/subra4.htm  Mystery Picture Game Match the math problem with the correct answer and uncover the picture. http://www.dositey.com/addsub/mystery2SS.htm Online Subtraction Worksheets Select the type of problems, number of problems and format. Click on the Create Worksheet button. Problems are worked and checked online. http://www.aplusmath.com/Worksheets/OnlineSubtraction.html