A great site for those who are helping someone learn math.

[Epoman]

It's a math sheet generator that you can choose what problems and how many on the sheet or sheets. It can do addition, subtraction, multiply, and division. I use if for my 8 year old son to help him be ahead of his class mates in math. We use it to make "Extra Credit" homework for him it's great.

http://www.aplusmath.com:8080/WorksheetGenerator.html