books WARM-uP Lesson 1 Independent work Exit card

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Presentation transcript:

books WARM-uP Lesson 1 Independent work Exit card Agenda books WARM-uP Lesson 1 Independent work Exit card

Warm-up Write the fraction as a decimal. 1. 4 3 8 Write the fraction as a decimal. 1. 4 3 8 Write the decimal as a fraction in simplest form. 2. 0.6

Lesson 1: Classifying real numbers Set: a collection of objects. Each object is called an element. Finite Set Infinite Set Null or Empty Set

Subsets of real numbers Natural Numbers a.k.a. “Counting Numbers” Whole Numbers Integers Rational Numbers Irrational Numbers Real Numbers

For each number, identify the subsets of real numbers to which each number belongs. Ex: 9 Ex: 5 𝟑 Ex: 𝟏 𝟒

Intersection of Sets Intersection of Sets A and B  written A∩B *the set of elements that A and B have in common Ex: Find A∩B A = {4, 8, 12, 16} B = {5, 8, 11, 14, 17}

Union of sets Union of Sets A and B written AUB *The set of elements that are in A or B Ex: Find AUB A = {1, 3, 5, 7, 9} B = {1, 2, 3, 4}

Determine whether the statement is true or false Determine whether the statement is true or false. Give a counterexample for false statements. Ex: The set of natural numbers is closed under subtraction. Ex: The set of integers is closed under addition.

Complete the Exit Card (Be sure name is on it) 2. Begin Lesson 1 Homework: Page 5: A – J, #1 – 5 All - Due Monday