Premium calculator - handy and powerful

The Casio fx-991 CW ClassWiz is the new upgraded version of the Casio fx-991 EX (Casio’s most advanced scientific calculator), containing additional features, to include 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 large Natural Textbook Display shows mathematical expressions like roots and fractions as they appear in your textbooks which increases comprehension because results are easier to understand.

• Clip-on on protective hard cover included
• 540+ functions
• Dual powered, solar with battery backup and Auto power-off.
• Free 3 year guarantee included
• Free UK delivery