Describes fractions in terms of place value and defines decimal fractions and the relationship between fractions and decimal numbers. Defines the six types of decimal numbers and their connections to rational and irrational numbers. Describes how to read decimal numbers, then write them in standard and expanded forms. Techniques to convert between fractions and decimals are discussed, including the Division Algorithm. Effects of multiplying and dividing decimal numbers by powers of ten are discussed. Different techniques to determine the relative sizes of decimal numbers and compare fractions and decimal numbers. Different ways to round decimal numbers and determine the number of significant figures in a number. How to add and subtract decimal numbers. How to add and subtract signed decimal numbers. How to multiply and divide decimal numbers. How to evaluate formulas with decimal number inputs. Defines the types of decimal expansions. Finally, long and shortened methods to convert pure and mixed recurring decimals to simple fractions or mixed numbers are demonstrated. 502 problems solved in detail, with explanations. Includes a topic-specific glossary, reference and index.