Use your calculator to work out 7.21+24.53.5×5\displaystyle \frac{7.21 + \sqrt{24.5}}{3.5 \times 5}3.5×57.21+24.5
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.