Here are some Internet sites that can help your child improve their number knowledge of Number bonds to 10, 20 and 100.
Number bond ideas Websites: Online practise:
http://www.mathszone.co.uk/number-facts/number-bonds-to-20/
http://www.amblesideprimary.com/ambleweb/mentalmaths/numberbond.html
http://www.mathplayground.com/PartPartWhole.html
http://www.mathplayground.com/number_bonds_10.html
http://resources.woodlands-junior.kent.sch.uk/maths/numberskills.html
http://www.topmarks.co.uk/maths-games/7-11-years/mental-maths
http://www.onlinemathlearning.com/addition-subtraction-games.html
http://www.ictgames.com/numberFacts.htm
http://www.ictgames.com/numberFacts.htm
Games suggestions:
http://letsplaymath.net/2007/01/13/number-bonds-better-understanding/
http://mathsticks.com/category/tags/number-bonds#.UvaozWKSySo
http://www.3to11maths.com/number-bonds-to-20.html
http://www.jessegray.notts.sch.uk/page_viewer.asp?page=Number+Bonds&pid=144
http://www.dasp.org.uk/DASPMaths/documents/DASP+MATHS+MENTAL+CALCULATIONS+-+compliments+to+100.pdf