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**-(-7.2) 1-(-3) -9+(-4.5) (-3.4)(-2) -15/3 -2/5 + 3/-5**

Bell work 8/15/14 Define: Real number Rational Irrational Integer Whole Number Natural Number Simplify. -(-7.2) 1-(-3) -9+(-4.5) (-3.4)(-2) -15/3 -2/5 + 3/-5

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**1.1 Properties of Real
Numbers**

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**Real Number: the set of all rational and
irrational numbers.**

Ex: 1, , 5/6, Rational Numbers: numbers that can be
written as a fraction a/b where be cannot be
0. Ex: 4, 12/6, 22/2.... Irrational number: number that cannot be
written as a fraction. Ex: , ,

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Rational Numbers -can be written as terminating decimals.
Ex: 0.25, 0.135, 6.86 -can be written as repeating decimals.
Ex: , -can be written as a fraction. Ex: 10/11, 14/2, 1/3

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Irrational Numbers -cannot be written as a repeating or
terminating decimal. Ex:

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Real Rational Irrational

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Rational Numbers -Natural numbers: the numbers used for
counting. {1,2,3,4.....} -Whole numbers: natural numbers and 0. {0,1,2,3,4....} -Integers: whole numbers and their opposites.
{...-2,-1,0,1,2...}

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Graph ¼ - 2

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Compare - 0.08 and - 0.1 Use the symbols < and >

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**The OPPOSITE or ADDITIVE INVERSE of
any number x is -x**

Ex: The additive inverse of 2 is -2. the additive inverse of -400 is 400. The RECIPROCAL of any nonzero number
a is 1/a. Ex: The reciprocal of 2 is 1/2. The reciprocal of -4/9 is -9/4.

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**Absolute value: a numbers distance away
from zero.**

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Homework!!!!!!!! :) Page 8 12,14,18,22,30,34,39,44,48,55

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