This packet of 14 learning modules on trade math is 1 of 8 such packets developed for apprenticeship training for low voltage alarm. Introductory materials are a complete listing of all available modules and a supplementary reference list. Each module contains some or all of these components: goal, performance indicators, study guide (a check list of steps the student should complete), a vocabulary list, an introduction, information sheets, assignment sheet, job sheet, self-assessment, self-assessment answers, post-assessment, instructor post-assessment answers, and a list of supplementary references. Supplementary reference material may be provided. The 14 training modules cover linear measurement; whole numbers; addition, subtraction, multiplication, and division of common fractions and mixed numbers; compound numbers; percent; mathematical formulas; ratio and proportion; perimeters, areas, and volumes; circumference and area of circles; areas of plane figures and volumes of solid figures; graphs; basic trigonometry; and metrics. (YLB)