When we can't simplify a number to remove a square root (or cube root etc) then it is a surd. Have a look at these examples (including cube...

Surds are the values in the form of roots that cannot be further simplified. Surds are irrational numbers. There are different types of surds in Mathematics. Learn the rules and methods to …

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

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 …

Nov 27, 2025 · Learn the basics of surds and how to simplify them for your IGCSE maths exam. This revision note covers the key concepts and worked examples.

A guide to understanding Surds, irrational numbers, and learning how to manipulate them using set rules.

What are surds? Surds are numbers left as square roots that give irrational numbers. An irrational number can’t be written as a fraction, and in decimal form is infinitely long with no recurring …