Stop the Clock!
This is great practice for telling time to 5 minute intervals, let your child practice and try to improve their time.
http://www.oswego.org/ocsd-web/games/StopTheClock/sthec3.html

This game lets the student unscramble the numbers to make a true number sentence. You can adjust the time and number of problems required, as your child improves...have fun!

Sum Sense Multiplication
This is the same as addition but gives the student great multipication fact practice! Time and amount of problems can be adjusted!
http://www.oswego.org/ocsd-web/games/SumSense/summulti.html

This site has several racing games the kids can use to practice their times tables. Diaper Derby is very popular...have the student focus on one fact at a time and try to increase their speed!