## Numbers (Math)

##### Created by:

16yaokar  on October 8, 2010

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# Numbers (Math)

 Natural Numbers1 and up: N
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#### Definitions

Natural Numbers 1 and up: N
Whole numbers 0 and up: W
Integers whole numbers & opposites: J or Z
Rational Numbers any number that can be written as a fraction: Q
Irrational Numbers non-repeating, non-terminating decimal ex.) pi: I
Real Numbers All rational and irrational numbers
opposites two numbers that are the same distance from 0
absolute value distance from 0 on a number line
Addition of Rational numbers + plus + = +
- plus - = -
+ plus - = sign of larger number
how do you prove addition and subtraction? on a number line
matrix rectangular arrangement of numbers into rows and columns
3x2 matrix- 3 rows, 2 columns
Subtraction of real numbers add and subtraction or opposites
Definition of subtraction- to add the opposite
-a opposite of a
-2 squared -2 x -2=4
when there are no parentheses its like 2 squared, always negative
(-2) to the 3rd power -2 x -2 x -2= -8
with parentheses you do the whole thing in parentheses

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