A nice tutorial on using the addition property of equality. Provides 4 different example problems that are worked through step-by-step and also provides some practice problems.

A detailed example is used to demonstrate the difference between the commutative and associative properties of addition.

Score goals as you answer questions about the properties of addition.

College professor Dan Bach offers a review of various basic topics in arithmetic, pre-algebra, and algebra. Order of operations, exponents, square roots, variables, and combining terms are just a few of the many topics covered.

Sixth graders work with the concept of equality and balance to solve one and two-step algebraic equations.