Problems 1-2
You need to work and remember these two problems whether they are assigned or not. Numbers or variables that are added (or subtracted) are called terms and those that are multiplied are called factors.

Problems 3-6
There are many problems throughout the text labeled IN YOUR OWN WORDS. Just relax. Do not be afraid to give your opinion. For the most part, these questions do not have "right" or "wrong" answers. You should spend about five minutes in answering each of these questions.

Problems 7-12
See Example 2.

Problems 13-36
See Examples 4 and 5.

Problems 37-48
See Examples 3 and 5.

Note: Homework Hints are given only for the levels 1 and 2 problems. You can also check some sources for homework help on the Internet (see Links, below), or you can call the author at
(707) 829-0606 or send an e-mail to: smithkjs@mathnature.com