**[tippy title=”Problems 1-21″]Problems 1-21**

Use Table 6.1 for the procedure.

**Problems 1, 2, 7, 13, 18, 19, and 21:**

Use Example 4 if you are changing from decimal form.

**Problems 3, 4, 8, 10, 11, 14, and 17:**

Use Example 2 if you are changing from percent form.

Problems 5, 6, 9, 12, 15, 16, and 20:

Use Example 3 if you are changing from fractional form. [/tippy]

**[tippy title=”Problems 22-28″]Problems 22-28**

See Examples 5 and 6 for estimation techniques.

**Problem 22a:** Think of 50% as 1/2.

**Problem 22b:** Think of 25% as 1/4.

**Problem 23:** Think of 10% as 1/10.

**Problem 24b :** Think of 33 1/3 % as 1/3.[/tippy]

**[tippy title=”Problems 29-46″]Problems 29-46**

These problems provide practice with the percent problem.

First, identify the percent.

Next, identify the whole quantity.

Finally, identify the remain number and write the proportion.

Take some time to study Example 7 because it illustrates different types of wording for the percent problem.[/tippy]

**[tippy title=”Problems 47-58″]Problems 47-58**

These problems are applied examples of the percent problem. Take a look at Examples 8-13 for practice with these types of problems.[/tippy]

**Note:** Homework Hints are given only for the Level 1 and Level 2 problems.

However, as you go through the book be sure you look at all the examples in the text. If you need hints for the Level 3 problems, check some sources for help on the internet (see the LINKS for that particular section. As a last resort, you can call the author at (707) 829-0606.

On the other hand, the problems designated “Problem Solving” generally require techniques that do not have textbook examples.

There are many sources for homework help on the internet.

**Algebra.help**

Here is a site where technology meets mathematics. You can search a particular topic or choose lessons, calculators, worksheets for extra practice or other resources.

**http://www.algebrahelp.com/**

**Ask Dr. Math**

Dr. Math is a registered trademark. This is an excellent site at which you can search to see if your question has been previously asked, or you can send your question directly to Dr. Math to receive an answer.

**http://mathforum.org/dr.math/**

**Quick Math**

This site provides online graphing calculators. This is especially useful if you do not have your own calculator.

**http://www.quickmath.com/**

**The Math Forum** @ Drexel

This site provides an internet mathematics library that can help if you need extra help. For additional homework help at this site, click one of the links in the right-hand column.

**http://mathforum.org/**