www.abcya.com 

ixl math practice

https://www.ixl.com/signin

Activities for 1st-3rd grade

http://saxonpublishers.hmhco.com/en/onlineactivitiesk-3s.htm

adding games

http://www.fun4thebrain.com/addition.html

Activities for 3rd and 4th Grade

http://saxonpublishers.hmhco.com/en/onlineactivities3-5s.htm

Multiplying Games for 4th Grade

http://www.multiplication.com/interactive_games.htm