Water Treatment Plant Operators Adv. Math Problems, Grade 3-4 (W-34)
Exam Preparation workbook for Grades 3 - 4 water treatment plant operators. This workbook contains the very latest upper grade level advanced mathematics problems typically found on ABC and state examinations. It contains 14 chapters with a letter code key and a complete set of step-by-step solutions at the end of every chapter to guide the reader in his/her study.