Visit these sites for extra practice, have fun!
General Math Practice:
http://www.mathmastery.com/cyberchallenge/
http://www.funbrain.com/osa/index.html
http://www.internet4classrooms.com/skills_5th_original.htm
http://www.dositey.com/2008/index-page-free_activities-sub-34-subsub-m.php
Addition:
http://www.weeklyreader.com/kids/games/add.asp
Subtraction:
http://www.weeklyreader.com/kids/games/subtraction.asp
Multiplication Practice:
http://www.multiplication.com/
http://www.weeklyreader.com/kids/games/multiply.asp
Multiplication Baseball:
http://www.prongo.com/math/multiplication.html
Addition Concentration:
http://www.aplusmath.com/Games/Concentration/Addition_Concentration.html
Rounding
http://www.aplusmath.com/Flashcards/rounding.html
Graphing:
http://nces.ed.gov/nceskids/createagraph/default.aspx
Math Dictionary:
http://www.teachers.ash.org.au/jeather/maths/dictionary.html
Fractions:
http://www.learningplanet.com/sam/ff/index.asp
Money:
http://www.funbrain.com/cashreg/index.html
Interactive Number Line:
http://www.funbrain.com/linejump/index.html
Ordering Decimals:
http://www.bbc.co.uk/education/mathsfile/shockwave/games/laddergame.html