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Casio FX-991CW Scientific Calculator 225/9440

Rating 4.882352941176471 out of 5
Read reviews (17)
Casio FX-991CW Scientific Calculator
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  • £34.00

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About this product

The Casio FX-991CW is the new upgraded version of the FX-991EX (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 Levels and Highers. Allowed in every exam where a calculator can be used.

Improved functionality and features, high definition 4 gradation display. More intuative to use with new use interface for easy navigation. It perform Mathematical Operation such as Square root, fractions, integration, complex functions, matrices, linear equations, polynomial equations.

  • Suitable for 11+.
  • LCD display.
  • 9 variable memories.
  • Non-stick keys.
  • 16 + 10 + 2 -digit display.
  • Auto shut-off.
  • 540 functions.
  • Recurring decimals.
  • Prime factorisation.
  • Algebraic logic.
  • Regression analysis.
  • Statistical functions.
  • Hyperbolic.
  • 24 levels of parenthesis.
  • Metric.
  • Dual power source - Solar Power with battery back up.

General information:

  • Batteries required 1 x LR44 (included) .
  • Manufacturer's 3 year guarantee.
  • EAN: 4549526615597.

The small print

Please note that this product is excluded from our 30 Day Money Back Guarantee. This does not affect your statutory rights.

*Prices correct as displayed but are subject to change.


The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.