part Part I Basic Math Concepts -- chapter 1 Introduction -- chapter 2 Sequence of Operations -- chapter 3 Fractions, Decimals, and Percent -- chapter 4 Rounding and Signi.cant Digits -- chapter 5 Powers of Ten and Exponents -- chapter 6 Averages (Arithmetic Mean) and Median -- chapter 7 Solving for the Unknown -- chapter 8 Ratio and Proportion -- chapter 9 Dimensional Analysis -- chapter 10 Units of Measurement, Conversions, and Electrical Calculations -- chapter 11 Measurements: Circumference, Area, and Volume -- chapter 12 Force, Pressure, and Head Calculations -- chapter 13 Mass Balance and Measuring Plant Performance -- part Part II Applied Math Concepts: Water Treatment -- chapter 14 Pumping Calculations -- chapter 15 Water Source and Storage Calculations -- chapter 16 Coagulation and Flocculation Calculations -- chapter 17 Sedimentation Calculations -- chapter 18 Filtration Calculations -- chapter 19 Water Chlorination Calculations -- chapter 20 Fluoridation -- chapter 21 Water Softening -- part Part III Wastewater Math Concepts -- chapter 22 Preliminary Treatment Calculations -- chapter 23 Primary Treatment Calculations -- chapter 24 Trickling Filter Calculations -- chapter 25 Rotating Biological Contactors (RBCs) -- chapter 26 Activated Biosolids -- chapter 27 Treatment Ponds -- chapter 28 Chemical Dosage Calculations -- chapter 29 Biosolids Production and Pumping Calculations -- chapter 30 Biosolids Thickening Calculations -- chapter 31 Biosolids Digestion -- chapter 32 Biosolids Dewatering and Disposal -- part Part IV Laboratory Calculations -- chapter 33 Water/Wastewater Laboratory Calculations -- part Part V Workbook Practice Problems -- chapter 34 Workbook Practice Problems.