This free basic math video tutorial presents a ton of information on the basic properties of numbers.

Topics covered include: The Reflexive Property of Equality, The Additive Property of Equality, The Transitive Property of Equality, The Substitution Property, The Cancellation Law of Addition, The Multiplicative Property of Equality, Cancellation Law of Multiplication, The Symmetric Property of Equality, The Zero-Factor Property, The Law of Trichotomy, The Transitive Property of Inequality, Properties of Absolute Value, The Commutative Property of Multiplication, The Closure Property of Addition, The Closure Property of Multiplication, The Commutative Property of Addition, The Associative Property of Addition, The Inverse Property of Addition, The Associative Property of Multiplication, The Identity Property of Addition, The Identity Property of Multiplication, The Inverse Property of Multiplication, The General Distributive Property, The Distributive Law of Multiplication Over Addition, The Distributive Law of Multiplication Over Subtraction, and The Negation Distributive Property.