Wade Ellis and Denny Burzynski's "Basic Properties of Real Numbers: Properties of the Real Numbers"

Scroll down to the section titled "The Associative Properties." Read this section through "Sample Set B," and work through the exercises in Practice Set B and Practice Set C. The solutions to the practice problems are shown directly below each problem.

The associative property states that several numbers can be added or multiplied in any order. Later in the course, you will be using this property often when you will have to switch terms around in order to simplify algebraic expressions.