Here are some links to try for math review in the computer lab:
Minute of Multiplication Integer Practice – http://www.xpmath.com/forums/arcade.php?do=play&gameid=17
Minute of Division Integer Practice – http://www.xpmath.com/forums/arcade.php?do=play&gameid=16
Integer Football – http://www.mathgoodies.com/games/integer_game/football.html
Hooda Math – 6 integer games – http://hoodamath.com/games/integer.php
Line Jumper – http://www.funbrain.com/linejump/index.html
Nasty Negatives – http://studymaths.co.uk/game.php?gameID=3