Comparing/Ordering Whole Numbers (Three Levels) 
http://www.bbc.co.uk/skillswise/numbers/wholenumbers/whatarenumbers/comparing/game.shtl

Comparing Numbers Quiz( Three Levels) – This will give you a score!!http://www.bbc.co.uk/skillswise/numbers/wholenumbers/whatarenumbers/comparing/quiz.shtml

Estimation Valley Golf (Various Levels):  Select your level, answer the questions, and putt your way to victory! 
http://www.mrnussbaum.com/estimationvalley.htm

Rounding Flash Cards:  Graded review on rounding whole numbers!
http://www.aplusmath.com/Flashcards/rounding.html

Comparing/Ordering Decimals: Help Builder Ted compare and order these decimals!(Three Levels- Level 2 and 3 contain positive and negative integers)http://www.bbc.co.uk/education/mathsfile/shockwave/games/laddergame.html


Decimal Darts: Take a challenge with greater than /less than! http://www.decimalsquares.com/dsGames/games/darts.html

 Decimal Place Value: This is a great review on Decimal Place Value. http://www.aaamath.com/plc51b-placevalues.html

 Decimal Concentration: Can you play this game to find the equivalent decimals?http://www.hbschool.com/activity/con_math/g05c03.html