GCSE Maths OCR J560

Use fractions in exact calculations without a calculator.

Use multiples of $π$ in exact calculations without a calculator.

Use surds in exact calculations without a calculator.

**Simplify expressions with surds, including rationalising denominators.

e.g. $\sqrt{12} = 2\sqrt{3}$

$\dfrac{1}{\sqrt{3}} = \dfrac{\sqrt{3}}{3}$

$\dfrac{1}{\sqrt{3}+1} = \dfrac{\sqrt{3}-1}{2}$**