Use your calculator to work out 10+6.256.25×2.5\displaystyle \frac{10 + \sqrt{6.25}}{6.25 \times 2.5}6.25×2.510+6.25
Write down all the figures on your calculator display.
Write your answer to part (a) correct to 2 significant figures.
192 exam-style questions on OCR GCSE Maths Using a Calculator. Each one has a worked solution and a mark scheme showing where the marks go.