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Lesson 86 Warm Up • Pg. 592 Course 2 Lesson 86 Number Families Number Families • The Counting Numbers: 1, 2, 3, 4, 5, … • The Whole Numbers: 0, 1, 2, 3, 4, 5, … • The Integers: … -3, -2, -1, 0, 1, 2, 3, … • The Rational Numbers: Any number that can be written as a fraction of two integers. ½, 5/3, -4/1 Number Families: Rational Numbers Integers Whole Numbers Counting Numbers 1, 2, 3, … 0, 1, 2, 3, 4, 5, … …, -3, -2, -1, 0, 1, 2, 3, … Examples: -3, -3/2, -1, -0.25, 0.75 Example 1 Graph the integers that are less than 4. Example 2 Answer true or false: a. All whole numbers are integers. b. All rational numbers are integers. Lesson 86 Homework •Pg. 594 Practice, #1-5, WS #86
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