Note:If by using certain maths techniques we remove the surd from either the top or bottom of the fraction then we say we are "rationalising the numerator" or "rationalising the denominator".

In mathematics, a surd is an irrational number that is expressed as a root (like a square root, cube root, etc.) of a rational number, where the root cannot be simplified to a whole number or a rational …

Learn everything about surds, including their definition, rules, properties, and practical uses. Explore solved examples to understand how to simplify, add, subtract, multiply, divide, and rationalise surds …

In this mini-lesson, we shall explore the topic of surds, by finding answers to questions like what do you mean by surds, what are the rules of surds, and simplifying calculations with surds.

Jul 23, 2025 · Surd is a mathematical term used to refer square roots of non-perfect squares. For example, √2, √3, √5 are few examples of Surds. It can also include higher roots like cube roots when …

Revise how to simplify expressions involving surds. BBC Bitesize Scotland revision for SQA National 5 Maths.

Understand surds in maths with clear definitions, laws, types, and step-by-step examples. Master surd rules for exams and competitive tests easily.