# Homework Hints 4-2

[tippy title=”Problems 1-8″]Problems 1-8
These problems are making sure you understand the idea of explaining what a number means by writing it is expanded notation.[/tippy]

[tippy title=”Problems 9-14″]Problems 9-14
See Example 1. (Yes, you are supposed to draw a picture showing the meaning of each of these).[/tippy]

[tippy title=”Problems 15-30″]Problems 15-30
See Example 3; these problems are really dealing with order of operations (from Chapter 1). You need to be able to do these before you can understand expanded notation.[/tippy]

[tippy title=”Problems 31-42″]Problems 31-42
Write the numbers in expanded notation. See Examples 2 and 4.[/tippy]

[tippy title=”Problems 43-48″]Problems 43-48
An abacus is a physical way of representing a number in expanded form. Read the directions for these problems carefully, and look at the example in Figure 4.3.[/tippy]

[tippy title=”Problems 49-58″]Problems 49-56
These problems reverse the process you did in Problems 43-48. Look at the example in Figure 4.2.[/tippy]

[tippy title=”Problems 50-57″]Problems 50-57
These problems reverse the process you did in Problems 44-49. Look at the example in Figure 4.3.[/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/