5 The Set of 1 Real Numbers CHAPTER OUTLINE 1.1 Fractions 6 1.2 Introduction to Algebra and the Set of Real Numbers 21 1.3 Exponents, Square Roots, and the Order of Operations 35 1.4 Addition of Real Numbers 45 1.5 Subtraction of Real Numbers 54 Problem Recognition Exercises: Addition and Subtraction of Real Numbers 62 1.6 Multiplication and Division of Real Numbers 63 Problem Recognition Exercises: Adding, Subtracting, Multiplying, and Dividing Real Numbers 74 1.7 Properties of Real Numbers and Simplifying Expressions 75 Group Activity: Evaluating Formulas Using a Calculator 88 Chapter 1 In Chapter 1, we present operations on fractions and real numbers. The skills that you will learn in this chapter are particularly important as you continue in algebra. Are You Prepared? This puzzle will refresh your skills with whole numbers and the order of operations. Fill in each blank box with one of the four basic operations, , , , or so that the statement is true both going across and going down. Pay careful attention to the order of operations. 18 2 10 30 3 4 7 5 2 0 6 6 4 6 9 1
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