Math 
price: ($) = <$2, ($$) = $2-7, ($$$) = > $7
price: ($) = <$2, ($$) = $2-7, ($$$) = > $7
Elementary
• TanZenLite - tangrams
• ArithFit (iPod, iPad) - Tetris like math game
• PopMath Lite
• TimesTables (iPod, iPad)
• KidsMath
• Pizza Math
• KidCalc
• MathDrills Lite
• MathBoard Addition (iPad, free and paid)
• MathMagic ($)
• iMathsBrain (free)