Hi!

Have you tried: http://www.softschools.com/

We have found some useful worksheets from this website. It is free for the most part.

Also, although you mentioned that your DD cannot read, any chance that you or someone can read the problem/question with her? If so and if you allow her to play on the computer, DCs really enjoy:

http://www.mathplayground.com/

There is a whole section of learning math using manipulative.

Good luck!
Mag