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Section P-1 What are the properties of real numbers?

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Real Numbers Symbol (R) May be described informally in many different ways

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Natural Numbers Symbol (N) Also called counting numbers Examples: {1,2,3,4…..}

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Whole Numbers Symbol (W) Also called counting numbers plus zero Examples: {0,1,2,3,4…..}

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Integers Symbol (J) Positive and negative whole numbers Examples: {…-3,-2,-1,0,1,2,3…}

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Rational Numbers Symbol (Q) Numbers that can be written as fractions Ex: whole numbers 6/3=2 repeating decimals 1.232323... terminating decimals 1.85692

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Irrational Numbers Symbol (I) Non-terminating numbers Ex: π, Square root of 2 Ex: π, Square root of 2 Non-repeating decimals that never end Ex: 1.849573495638974…. Ex: 1.849573495638974….

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Quiz 1.Zero is a real number? 2.Real numbers are a subset of rational numbers? 3.Irrational numbers are not a subset of rational numbers 4.6/3 is a rational number 5.0 is a natural number

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Quiz Answers 1.True2.False3.True4.True5.False

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Define these properties Closure Property Commutative Property Associative Property Distributive Property Identity Property Multiplication Property of Zero Additive Inverse Property Multiplicative inverse property

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Define these properties Reflexive Property Symmetric Property Transitive Property Substitution Property Trichotomy Property

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Vocabulary Additive Identity Multiplicative Identity Additive Inverse Multiplicative Inverse (aka ???)

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Absolute Value If a and b are any two points on the number line, then the distance between a and b is │a - b│. AKA, d(a,b) = │a - b│

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PEMDAS Please (parenthesis, brackets, grouping symbols) Excuse (Exponents) My (Multiply) Dear (Divide) Aunt (Add) Sally (Subtract) ***multiply and divide are done in order from left to right... Same with add and subtract

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