I do a lot of math work at home with my boys, and creating random problems for them to solve can be challenging.   I just discovered a Microsoft Education Labs project that generates worksheets based on a sample problem.   Kind of like Pandora (music), give it a problem you €œlike € and it comes back with more, with a similar difficulty.   The problems are embedded directly into Word with solutions on the last page.   You can do basic math, algebra solving, and more.   Use the Math Input Panel in Windows 7, or use their specialized syntax.   Very easy!

App in use

Sample sheet:

Link: http://www.educationlabs.com/projects/MathWorksheetGenerator/Pages/default.aspx