http://www.arcademicskillbuilders.com/games/
http://www.bbc.co.uk/bitesize/ks1/
http://www.hbschool.com/activity/counting_money/
http://www.smartygames.com/igre/math/learnMoney.html
http://www.math-play.com/free-money-game/free-money-game.html
http://www.mrnussbaum.com/cashout/index.html
http://www.math-play.com/millionaire-money-game/millionaire-money-game.html
http://www.learningbox.com/Base10/BaseTen.html
http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/bead/questions/q3.htm