Ordering Decimals –

https://hwb.wales.gov.uk/cms/hwbcontent/Shared%20Documents/VTC/phase4_20030829/Mathematics/Keystage2/Numbers/Anintroductiont/Introduction/MainSessionPart1.htm

http://cemc2.math.uwaterloo.ca/mathfrog/english/kidz/orderdecimal6.shtml

http://www.wmnet.org.uk/resources/gordon/Higher%20And%20Lower%20-%20Reveal%20and%20Order%20v6.swf

Rounding Decimals –

http://www.topmarks.co.uk/Flash.aspx?f=DartboardRoundingv2

http://www.transum.org/software/SW/Starter_of_the_day/Students/RoundingDP.asp