A time t t\,t is measured as 8.6 seconds, rounded to 2 significant figures.
Write down the error interval for ttt.
..... ≤t<\leq t <≤t< .....
Practise OCR GCSE Maths Error Intervals with exam-style questions for Foundation and Higher tier. 84 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.