Types of Number

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Overview

https://www.youtube.com/watch?v=PFSYJ7uOiOk&list=PLCiOXwirraUCa2MYf_oSM94uvwIGPMZ1q

Natural Numbers

A positive whole number including zero. Represented as N = (0,1,2,3,4 ....) N.jpg

Integer Numbers

Integers are like whole numbers, but they also include negative numbers ... but still no fractions allowed. Represented as Z = (...,-2,-1,0,1,2,...) Integer.jpg

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 Rational.jpg

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. Irrational.jpg

Real Numbers

Any positive or negative number with or without a fractional part. Real.jpg

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. Ordinal numbers.jpg

Cardinal Numbers

A Cardinal Number is a number that says how many of something there are, such as one, two, three, four, five.

Revision

1. -1 is not included in which of the following

Natural Number
Natural numbers are only positive integers
Rational Number
All integers can be respresented as a ratio
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

2. 12 is not included in which of the following

Natural Number
Natural numbers are only positive integers
Irrational Number
All integers can be respresented as a ratio
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

3. What is this number an example of '29th'

Natural Number
Natural numbers are only positive integers
Ordinal number
A number used to identify the relative position of one number to another.
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

4. What is the symbol 'Z' representative of

Natural Number
Natural numbers are only positive integers
Ordinal number
A number used to identify the relative position of one number to another.
Real Number
All integers are also real numbers
Integer
Integers are positive or negative

5. What is the difference between natural numbers and integers?

Integers can include negatives
This is correct.
Natural numbers can include negatives
Natural numbers can only be positives. Integers can be negative or positive.
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.

6.

What type of number is used for identifying the size of something?

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