Free PreAlgebra 1st Edition

First Edition Lessons are Copyright Cheryl Wilcox 2010.

These lessons form an open-source PreAlgebra textbook. The book was designed for a PreAlgebra course at Diablo Valley College, a community college in California. This project is made possible by sabbatical funding from the Contra Costa Community College District.

For answer keys and other instructor resources, contact author Cheryl Wilcox at cwilcox@dvc.edu or choose the "Contact" option from the menu above.

Special thanks to instructors Jane Brecha and Leslie Month for testing the beta version of this text in Spring 2011.

I have restored the first edition paper textbook at the lulu.com site, overcoming numerous technical difficulties caused by some kind of feud between apple and adobe. Unfortunately the price has gone up to about \$20 per volume. The author receives no revenue from this product. Books are printed at cost.

Each lesson has an explanation with examples, a worksheet covering the lesson topics, Homework set A with answers, and Homework set B without.

VIII. Percents Continued
Lesson 43:* Interest
Lesson 44: *Percents in Mixtures
Lesson 45: *Percent Decrease
Lesson 46: *Percent Increase
Lesson 47: *Extended Percent Problems
Lesson 48: *Optional Percent Topics
Practice Test Lessons 37 - 48
Labs for Lessons 43 - 48

X. Get Ready for Algebra I
Lesson 55: *Perimeter Problems with Related Variables
Lesson 56: *The Split Quantity Maneuver
Lesson 57: *Comprehensive Review
Unit 1 Lessons 1 - 6                Unit 2  Lessons 7 - 12                     Unit 3 Lessons 13 - 18
Lesson 58: *Comprehensive Review
Unit 4 Lessons 19 - 24            Unit 5 Lessons 25 - 30                    Unit 6 Lessons 31 - 36
Lesson 59: *Comprehensive Review Lessons 37 - 55
Unit 7 Lessons 37 - 42           Unit 8 Lessons 43 - 48                     Units 9 & 10 Lessons 49 - 56
Lesson 60: *Algebra I Preview

Practice Final Exam

Lessons marked with an asterisk are optional in the Diablo Valley College Course Outline for Math-075.

Cheryl Wilcox