represent whole numbers and two-place decimals in expanded form.

http://www.mrsbogucki.com/cgi-bin/quiz.pl?FILE=decimals

http://www.interactivestuff.org/sums4fun/switch.html

http://www.beaconlearningcenter.com/WebLessons/ThereMustBeThousands/default.htm

http://www.beaconlearningcenter.com/WebLessons/WhatsYourName/default.htm