Fraction Practice Games/Websites

Factor and Multiple Practice (GFC and LCM)
http://www.math-play.com/Factors-Millionaire/Factors-Millionaire.html
http://www.math-play.com/Factors-and-Multiples-Jeopardy/Factors-and-Multiples-Jeopardy.html 

Equivalent Fractions
http://www.sheppardsoftware.com/mathgames/fractions/memory_equivalent1.htm
http://www.fractionmonkeys.co.uk/activity/
http://illuminations.nctm.org/Activity.aspx?id=3510 
http://www.funbrain.com/fract/

Simplifying Fractions:
http://www.math-play.com/simplifying-fractions-game/simplifying-fractions-game.html
http://www.math-play.com/baseball-math-simplifying-fractions/simplifying-fractions-game.html

Adding Fractions:
http://www.math-play.com/football-math-adding-fractions/football-math-adding-fractions.html
http://www.sheppardsoftware.com/mathgames/fractions/FruitShootFractionsAddition.htm
Adding fractions video
http://www.arcademics.com/games/speedway/speedway.html
http://www.funbrain.com/fractop/
http://www.math-play.com/adding-and-subtracting-fractions-game.html

Subtracting Fractions:
http://www.sheppardsoftware.com/mathgames/fractions/FruitShootFractionsSubtraction.htm
Subtracting fractions video
http://www.funbrain.com/fractop/
http://www.math-play.com/adding-and-subtracting-fractions-game.html

Adding and Subtracting Mixed Numbers
http://studyjams.scholastic.com/studyjams/jams/math/fractions/add-sub-mixed-numbers.htm
http://www.superteachertools.com/jeopardy/usergames/Mar201011/game1268685936.php
http://www.ixl.com/math/grade-5/subtract-mixed-numbers-with-unlike-denominators