This Casio FX-85GTX Scientific Calculator is approved for use in every UK exam where a calculator is permitted. This upgraded model now features 276 functions, including Ratio, Digit Separator, Advanced Statistics, Advanced Tables and Variables List. The large Natural Textbook Display (Natural-V.P.A.M.) shows mathematical expressions as they appear in your textbook for improved learning and comprehension. Recommended and approved for Key Stages 3 and 4 (including GCSE, National and Higher, Junior and Leaving), the calculator comes with a slide on protective hard cover and is solar powered with a battery back up.