Section 3 Chapter 13 - Number Systems Flashcards
1
Q
Natural number
A
A whole number used in counting
2
Q
Rational number
A
Any number that can be expressed as a ratio or fraction
3
Q
Integer
A
A whole number
4
Q
Irrational number
A
A number which cannot be expressed as a fraction such as pi or root(2)
5
Q
Ordinal number
A
A number used to describe the position of an object that is placed in order. e.g. first or seventh
6
Q
Why hexadecimal is used (2)
A
- It is easier to remember hex numbers
- Concise and can represent a byte in 2 digits
7
Q
Real Numbers
A
All rational + irrational numbers - the set of all possible real world quantities
8
Q
Main use of natural numbers
A
counting
9
Q
Main use of real numbers
A
measurement
