Casio ClassWiz Scientific Calculator - FX-85GTCW-W-UT

The Casio FX-85GTCW-W-UT uses one AAA battery, which is included with your purchase.

Yes, this calculator is widely approved for use in various examinations from Key Stage 3 to Higher levels where scientific calculators are permitted. Always check with your specific examination board for their latest regulations.

To perform statistical calculations, press the 'MENU' key, then navigate to the 'Statistics' mode (usually indicated by 'STAT'). From there, you can input your data and select various statistical calculations like mean, standard deviation, and regression analysis. Consult the full user manual for detailed step-by-step instructions for specific functions.

To clear all memory and reset the calculator to its factory default settings, press 'SHIFT' followed by '9' (CLR). Then select '3' (All) and confirm by pressing the 'Equals' (=) key.

Yes, the Casio FX-85GTCW-W-UT features a dedicated fraction button, allowing you to easily input and display fractions as they appear in textbooks, thanks to its Natural Textbook Display.

The 3-year guarantee covers manufacturing defects and faults that occur under normal use. It does not cover damage caused by misuse, accidents, or unauthorized repairs. For specific details on terms and conditions, refer to the warranty information provided with your calculator or contact Casio customer service.

Check if the AAA battery is correctly inserted with the positive and negative terminals aligned. If the battery is old or depleted, replace it with a new one. Ensure the 'ON' button is pressed firmly.

This usually indicates a low battery. Replace the AAA battery with a fresh one. If the issue persists with a new battery, refer to the user manual for display contrast settings (if available on this model) or contact support.

Ensure you are in the correct mode for your calculation (e.g., 'Comp' for general calculations, 'Stat' for statistics). Check your input carefully for errors, including misplaced parentheses or incorrect function arguments. You might need to reset the calculator to its default settings by pressing 'SHIFT' then '9' (CLR) and selecting '3' (All) then 'Equals'.

Gently clean around the unresponsive key with a soft, dry cloth or a small brush to remove any debris. Avoid applying excessive force. If multiple keys are affected, or if the issue continues, contact customer support.

An error message typically means the calculation you attempted is mathematically impossible (e.g., division by zero, square root of a negative number) or exceeds the calculator's capacity. Review your input for logical or syntax errors. Press 'AC' to clear the error and try again.