k k\,k is an integer such that 1≤k≤9 1 \leq k \leq 9\,1≤k≤9
Prove that 0.k˙0˙=10k99\displaystyle 0.\dot{k}\dot{0} = \frac{10k}{99}0.k˙0˙=9910k
Practise OCR GCSE Maths Recurring Decimals to Fractions with exam-style questions for Foundation and Higher tier. 76 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.