Book excerpt: Practical Math covers basic math principles and operations and provides practice with both general math problems and industry-based problems. This edition provides math problems typically found in carpentry, electrical, HVAC, plumbing, welding, boiler operation, machining, and other trades. * Each basic math operation is thoroughly explained and illustrated. * Step-by-step examples are given for each operation. * The answer key located at the back of the textbook provides answers to odd-numbered practice problems. * Each chapter ends with a set of exercises and a chapter test. Master Math® problems show step-by-step math operations.