Section 1.7: Adding and Subtracting Fractions
Homework Hints

Problems 1-2
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 3-6

Problems 7-10
If you multiply by a fraction larger than 1, the product is larger; if you multiply by a fraction smaller than 1, the product is smaller.

Problems 11-12
See Example 1.

Problems 13
See Examples 2 and 3.

Problems 14-17
See Examples 4 an 5.

Problems 18-25
See Example 6; take a lot of time looking though this example. It is really the most important example of this section and will help you through many of these problems.

Problems 26-29
See Example 7.

Problems 30-35
See Example 8

Problems 36-47

Problems 48-52
These problems involve mixed operations with fractions. Remember, to add or subtract you need a common denominator. If the problem uses "of," it is probably a multiplication of fractions. If division is involved, you "invert and multiply."

Note: Homework Hints are given only for the levels 1 and 2 problems. If you need hints for the level 3 problems, look in Appendix E. 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