Prove algebraically that the recurring decimal 0.1˙2˙k˙0.\dot{1}\dot{2}\dot{k}0.1˙2˙k˙ can be written as 120+k999\displaystyle \frac{120+k}{999}999120+k
203 exam-style questions on Eduqas GCSE Maths Recurring Decimals to Fractions. Each one has a worked solution and a mark scheme showing where the marks go.