\(\sqrt{3} = 1.732050807568877\) ... \(\pi = 3.14159\) ... Roots that cannot be written as exact decimals are called surds. Leaving an answer in surd form means the answer is exact. This square has an ...

National 5 Working with surds Rules of surds Surds are square roots which can’t be reduced to rational numbers. Some can be simplified using various rules or by rationalising the denominator. Part of ...