Difference between revisions of "Types of Number"
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{ | { | ||
− | |type="{}"} | + | | type="{}"} |
− | What type of number is used for identifying the size of something? | + | What type of number is used for identifying the size of something? Please format your answer in lowercase. |
{ cardinal } | { cardinal } | ||
+ | || | ||
+ | |||
+ | { What is the difference between natural numbers and integers? | ||
+ | |type="()"} | ||
+ | - Natural numbers can include negatives | ||
+ | || Natural numbers can only be positives. Integers can be negative or positive. | ||
+ | + Integers can include negatives | ||
+ | || This is correct. | ||
+ | - Natural numbers have to be a whole number | ||
+ | || Both integers and natural numbers must be whole numbers. | ||
+ | - Integers can include 0 | ||
+ | || Both integers and natural numbers can include 0. | ||
+ | |||
</quiz> | </quiz> |
Revision as of 12:06, 20 September 2017
Contents
Natural Numbers
A positive whole number including zero. Represented as N = (0,1,2,3,4 ....)
Integer Numbers
Any positive or negative whole number including zero. Represented as Z = (...,-2,-1,0,1,2,...)
Rational Numbers
A number that can be expressed as a fraction or ratio. An example of this is 8 or even 1/8. Represented as Q
Irrational Numbers
A number that cannot be represented as a fraction or ratio, the decimal form will contain infinite repeating values. An example of this is √7 because it cannot be simplified.
Real Numbers
Any positive or negative number with or without a fractional part.
Ordinal Numbers
A number used to identify the relative position of one number to another. Unlike the other types of numbers it does not have a representative symbol. An example of this would be 1st, 2nd, 3rd.
Cardinal Numbers
A number used to identify the size of something.
Real Algebraic
The real subset of the algebraic numbers: the real roots of polynomials. Real algebraic numbers may be rational or irrational. √2 = 1.41421... is irrational. Irrational decimal expansions neither end nor repeat. Represented as AR