Timez attack is adding division, addition and subtraction...my kids can't wait. Right now we just play for free. Once they add the addition, subtraction and division...I will get them each a few months subscription to the fancier version (my older son could use the review and loves the game and once he tires of it I'll cancel his). My younger son will probably have his subscription for longer.

...reading is pleasure, not just something teachers make you do in school.~B. Cleary