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

## Presentation on theme: "-(-7.2) 1-(-3) -9+(-4.5) (-3.4)(-2) -15/3 -2/5 + 3/-5"— Presentation transcript:

-(-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

1.1 Properties of Real  Numbers

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: , ,

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

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

Real Rational Irrational

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...}

Graph ¼ -  2

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

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.

Absolute value: a numbers distance away  from zero.

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