Kids Reads http://www.kidsreads.com
Cool Math 4 Kids http://www.coolmath4kids.com
Math Playground http://www.mathplayground.com
Figure This! Math Challenge http://www.figurethis.org
Math For Kids - Math fact lessons and practice. http://www.kidsnumbers.com
Ask Math Questions http://www.mathforum.org/dr.math
Multiplication Games and Practice http://www.multiplication.com
Math Fact Practice http://www.harcourtschool.com/activity/thats_a_fact/english_K_3.html
Fact Practice