How do you simplify a surd?

Write the number under the root as a square times what is left, and take the square outside. Repeat if the leftover still has a square factor.

Can you add √2 and √8?

Not as they stand. Simplify √8 to 2√2, then add to get 3√2.

Are surds Higher or Foundation?

Simplifying surds and rationalising denominators are Higher. Foundation answers are not expected in surd form.

Surds GCSE Maths questions — simplify and rationalise

Surds GCSE Maths questionsSurds GCSE Maths questions: simplify √a, add like surds, and rationalise a denominator. Leave exact answers. Higher non-calculator practice with marking.Start free GCSE Maths test · Pricing