Problems 1-6
These problems are The Essential Idea s for this section. Work through all of these problems.

Problems 7-12
These are estimation problems so they should not be worked with a paper and pencil or with a calculator.

Problems 13-16
See Example 4.

Problems 17-18
See Example 1.

Problems 19-22
See Example 2.

Problems 23-28
See Example 5.

Problems 29-32
See Example 3. <

Problems 33-38
See Example 6.

Problems 39-42
See Example 7.

Problems 43-48
See Example 9.

Problems 49-52
See Example 8.

Problems 53-54
The Problem of the Day relates calculating interest on credit cards by putting the topic in an everyday setting.

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