| M5 Home Page |
| All About Circuits | Basic Identities |
| Math.com | Properties of Integers |
| Purplemath | Number Properties |
| WTAMU | Properties of Real Numbers |
| LearningWave | Additive Property of Zero |
| LearningWave | Commutative and Associative Properties of Addition |
| Math Reference | Properties of Addition and Multiplication |
| LearningWave | Commutative and Associative Properties of Multiplication |
| LearningWave | Multiplicative Identity Property of 1 and Property of Reciprocals |
| Math Reference | Properties of Addition and Multiplication |
| All About Circuits | Commutative Property |
| Dummies.com | Associating and Commuting with Expressions in Algebra |
| All About Circuits | Associative Property |
| Dummies.com | Associating and Commuting with Expressions in Algebra |
| Infoplease | Associative Law |
| All About Circuits | Distributive Property |
| Interactive Mathematics | The Distributive Law |
| LearningWave | Distributive Property |
| University of Rochester | Distributive Law |
| LTCC Online | Number Properties Memory Game |
| Math.com | Properties of Real Numbers: Workout |