Verify that 3.16+2.822.00\displaystyle \frac{3.16 + 2.8^2}{2.00}2.003.16+2.82 gives 5.5.
Write down all the figures on your calculator display.
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.