Basic Math Concepts: For Water and Wastewater Plant OperatorsFROM THE PREFACE In the years since the first edition, I have continued to consider ways in which the texts could be improved. In this regard, I researched several topics including how people learn (learning styles, etc.), how the brain functions in storing and retrieving information, and the fundamentals of memory systems. Many of the changes incorporated in this second edition are a result of this research. The changes were field-tested during a three-year period in which I taught a water and wastewater mathematics course for Palomar Community College, San Marcos, California. This first volume, "Basic Math Concepts for Water and Wastewater Plant Operators," provides a thorough review of the necessary mathematical concepts and skills encountered in the daily operations of a water and wastewater treatment plant. Each chapter begins with a skills check to allow the student to determine whether or not a review of the topic is needed. Practice problems illustrate the concepts presented in each section. |
Contents
Solving Math Problems | 1 |
Decimals | 85 |
Percents | 109 |
Averages | 121 |
Ratios and Proportions | 141 |
Conversions | 161 |
mgL to gpg conversions | 191 |
MetricEnglish conversions | 199 |
Linear Measurement | 205 |
Area Measurement | 217 |
Volume Measurement | 235 |
Scales and Graphs | 257 |
Powers Roots and Scientific Notation | 283 |
Rounding and Estimating | 313 |
Dimensional Analysis | 329 |
Common terms and phrases
3rd Dim answer arithmetic mean bar graph box diagram box method circumference Complete the following concept cone conversion equation cross multiplication cylinder decimal fraction decimal number decimal point move determine diameter dimensional analysis divide equal equivalent fractions factors flow following numbers following problems Fractions or Mixed ft Example gallons hundredths improper fraction indicates a review larger box lateral area length line graph logarithmic scale lowest terms metric system mixed number move the decimal moving average multiply nomograph Number Correct numerator and denominator percent perimeter power of ten PRACTICE PROBLEMS Proportion Problem rectangle Reduce fractions Reduce the fraction refer to Chapter rounding scientific notation section is advisable segments shown in Example side significant figures smaller box sq ft sq yds square root Step SUMMARY tank tick marks trapezoid Types of Graphs units unknown value wastewater calculations water and wastewater whole number zeros