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Freshman Number Sets Week 3

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Review Irrational Numbers Numbers that cannot be written as a fraction Rational Numbers Numbers that can be written as a fraction Decimals that repeat Decimals that stop √25, ½, 5, 0.123, 0.333333… Real Numbers Set of all irrational and rational numbers

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Review Integers Positive and negative counting numbers (plus 0) {…-3, -2, -1, 0, 1, 2, 3…) Whole Numbers Counting numbers starting at 0 {0, 1, 2, 3…} Natural Numbers Counting numbers starting at 1 {1, 2, 3…}

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Practice Choose the answer choice that most specifically defines the given number: 1)-2 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 1)-2 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real -2 is not a whole number, whole numbers are not negative.

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Practice Choose the answer choice that most specifically defines the given number: 2)0 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 2)0 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real Natural numbers start at 1. 0 is the smallest whole number.

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Practice Choose the answer choice that most specifically defines the given number: 3)2 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 3)2 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 4)π a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 4)π a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real Pi is approximately 3.14159… it is a decimal that doesn’t stop and doesn’t repeat so it is irrational

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Practice Choose the answer choice that most specifically defines the given number: 5)½ a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 5)½ a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real Integers are not fractions.

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Practice Choose the answer choice that most specifically defines the given number: 6)-8 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 6)-8 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real Whole numbers cannot be negative.

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Practice Choose the answer choice that most specifically defines the given number: 7)6.2831853071… a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 7)6.2831853071… a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real Decimals that do not stop and do not repeat are irrational.

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Practice Choose the answer choice that most specifically defines the given number: 8)3.5 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real

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Practice Choose the answer choice that most specifically defines the given number: 8)3.5 a. natural, whole, integer, rational, real b. whole, integer, rational, real c. integer, rational, real d. rational, real e. irrational, real This decimal stops so it is rational. 3.5 is equal to 7/2.

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Warm Up Add or subtract. 1 + – 1515 1 1. 2525 2. 7 12 3 – 2 3. 6.5 + –1.2 4. 3.4 – 0.9 5.3 2.5 3535 11 12 1313 1.

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