Work out 55.4−12.371.86+7.42\displaystyle \sqrt{\frac{55.4 - 12.37}{1.86 + 7.42}}1.86+7.4255.4−12.37
Write down all the figures on your calculator display.
55 exam-style questions on WJEC GCSE Maths Using a Calculator. Each one has a worked solution and a mark scheme showing where the marks go.