A distance d d\,d is measured as 540 km, correct to 2 significant figures.
Write down the error interval for ddd.
Practise AQA GCSE Maths Error Intervals with exam-style questions for Foundation and Higher tier. 84 questions, matched to the AQA GCSE Maths (8300) specification and written in Paper 1, Paper 2 and Paper 3 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.