6th Grade Math Practice: Equivalent Fractions and the Number Line

http://www.sheppardsoftware.com/mathgames/fractions/mathman_fractions_numberline.htm
http://www.sheppardsoftware.com/mathgames/fractions/memory_equivalent1.htm

6th Grade Math Ratio Practice

https://www.brainpop.com/games/ratiorumble/

5th Grade Topic 2 Review: Adding/Subtracting Decimals

Video about mental math: https://www.youtube.com/watch?v=E_AVDiXoQ9Q

Mental Math Games:

http://www.topmarks.co.uk/Flash.aspx?b=maths/addition

http://www.topmarks.co.uk/Flash.aspx?b=maths/addition

http://www.mathplayground.com/ASB_Hungry_Puppies_Decimals.html

Adding Decimals:

http://www.math-play.com/soccer-math-adding-decimals-game/adding-decimals-soccer-game.html

http://www.math-play.com/adding-decimals-game.html

http://www.math-play.com/Decimals-Jeopardy/decimals-jeopardy-game.html

http://www.sheppardsoftware.com/mathgames/decimals/matchingDecimalsAdd.htm

Subtracting Decimals:

http://www.math-play.com/subtracting-decimals-game/subtracting-decimals-soccer.html

http://www.math-play.com/subtracting-decimals-basketball-game/subtracting-decimals-basketball-game.html

6th Grade Math Review Factors/Multiples/Distributive Property

Factors:

https://illuminations.nctm.org/Activity.aspx?id=4134 

Prime and Composite Numbers:

http://www.sheppardsoftware.com/mathgames/numbers/fruit_shoot_prime.htm

Multiples

http://www.mathplayground.com/multiples.html 

Common Multiples (LCM)

http://www.sheppardsoftware.com/mathgames/fractions/LeastCommonMultiple.htm  

http://www.fun4thebrain.com/beyondfacts/lcmsnowball.html 
http://www.fun4thebrain.com/beyondfacts/gcfsketch.html 

Common Factors (GCF)

http://www.sheppardsoftware.com/mathgames/fractions/GreatestCommonFactor.htm 

Distributive Property

http://henryanker.com/Math/Algebra/Distributive_Property_1.swf 

http://www.mathgames.com/skill/6.15-distributive-property