A distance d d\,d is measured as 540 km, correct to 2 significant figures.
Write down the error interval for ddd.
Practise Eduqas GCSE Maths Error Intervals with exam-style questions for Foundation and Higher tier. 84 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 2 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.