Types of Number

What is Types of Number?

The classification of the real numbers into natural numbers, integers, rational numbers and irrational numbers, together with the derived descriptions prime, square, cube, factor, multiple and reciprocal. Each classification decides which methods are legal: only a rational number can be written as an integer fraction, and only a positive integer has a prime factorisation.

This definition is part of the Number chapter in Cambridge O Level Mathematics (Syllabus D).

Concepts related to Types of Number

• prime factorisation
• hcf and lcm
• reciprocal
• rational and irrational