Math Magician Games
Practise basic number facts against the clock. Choose addition, subtraction, multiplication or division from the main menu.
http://oswego.org/ocsd-web/games/mathmagician/cathymath.html
Bingo
A useful teaching tool with a great range of number activities at different levels. This site makes class Bingo activities manageable. Play bingo where students have to add or subtract, multiply, divide, round up or down, estimate, use co-ordinates, use place value or find remainders.
http://www.wmnet.org.uk/wmnet/custom/files_uploaded/uploaded_resources/848/auto_indx.htm