The Casio fx-991 CW is the new upgraded version of the Casio fx-991 EX, containing additional features such as a high definition display and improved menu navigation. Approved for Key stages 3, 4 and 5, recommended for Advanced GCSE, A/AS level and Highers. Allowed in every UK exam where a calculator can be used.

The Casio fx-991 CW is Casio's most advanced scientific calculator with 540 + mathematical functions. The large Natural Textbook Display shows mathematical expressions like roots and fractions as they appear in textbooks which increases comprehension.

• Dual powered, solar with battery back up and auto power-off
• Clip-on protective hard cover included
• Large and clear high definition Natural Textbook Display
• New intuitive key layout and menus
• QR code to display graphic representation
• Rounded dome keys for simple and accurate key entry
• Powers, roots, reciprocal, fraction calculations
• Advanced statistics
• Table of values
• Ratio
• Equation, Matrix, Vector, Inequality, Probability and Complex Number Calculations
• Base-N function (hexadecimal/decimal/binary/octal)
• Variables list
• Simulation tool 'Math Box' for dice roll and coin toss
• Random decimal and integer generator
• Hours (Degrees)/minutes/seconds
• Digit separator