The Four Operations

What is The Four Operations?

Addition, subtraction, multiplication and division, applied to integers, fractions and decimals under a fixed order of precedence: brackets first, then indices and roots, then multiplication and division worked from left to right, then addition and subtraction worked from left to right. The order is a convention that makes every written expression have exactly one value.

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

Concepts related to The Four Operations

• order of operations
• brackets
• signed numbers
• left-to-right rule