1. -(-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

2. 1.1 Properties of Real 
Numbers

3. 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: , ,

4. 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

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

6. Real
Rational
Irrational

7. 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...}

10. Graph
¼ -  2

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

12. 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.

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

15. Homework!!!!!!!! :)
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