BrainGenie: Whole Integer, Rational
BrainGenie: Classify Square Roots
MathGames: Rational and Irrational
MathPlay: Rational and Irrational Baskets (flash)
Quia: Battle Ship (flash)
Quia: Columns (flash)
Quia: Concentration (flash)
Quia: Concentration 2 (flash)
Quia: Number Classification Quiz (flash)
Quia: Number Classification Quiz 2 (flash)
Quia: Pop-Up (flash)
ReviewGameZone: Real Numbers Games
SoftSchools: Classifying Numbers (flash)