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{ "AVAILABLE_MSG_NOW": "Order now, collect immediately", "ISALTM_HOME_DELIVERY_TOWN_NOT_DELIVERABLE": "Sorry, we are not able to offer delivery to this town", "PDP_OUT_OF_STOCK": "Currently <strong>out of stock</strong>", "PDP_SATURDAY_DELIVERY_AVAILABILITY": "Saturday delivery available", "STOCK_AVAILABILITY": "Your store:", "ISALTM_LOCAL_DELIVERY_OUT_OF_STOCK": "<strong>Currently out of stock</strong> for home delivery to", "LOCAL_PDP_AVAILABLE_IN_DC_WITH_STORENAME": "Reserve now, collect in <span id=\"localPDPAvaialbleDC\">{1}</span> days at {0}", "LOCAL_PDP_AVAILABLE_IN_HUB_BEFORE_1": "Order now, collect from 4pm today", "PARTIAL_QUANTITY_LOCAL_PDP_AVAILABLE_IN_STORE": "Only {0} available. Order now, collect immediately", "ERROR_MSG": "Sorry, out of stock in the nearest <span id =\"errorMsgNearestStore\">{0}</span> stores", "LOCAL_PDP_AVAILABLE_IN_STORE_R2": "Order now, collect immediately at {0}", "PARTIAL_QUANTITY_LOCAL_PDP_AVAILABLE_IN_HUB_AFTER_1": "Only {0} available. Order now, collect first thing tomorrow", "PDP_OUT_OF_STOCK_STORENAME": "<strong>Currently out of stock</strong> at {0}", "STANDARD_DELIVERY_FROM": "Delivery from: &pound;{0}", "LOCAL_PDP_AVAILABLE_IN_DC_R2": "Order now, collect in {0} days at {1}", "PARTIAL_QUANTITY_LOCAL_PDP_AVAILABLE_IN_DC": "Only {0} available. Order now, collect in {1} days", "STANDARD_DELIVERY_FROM_FREE": "Delivery from: Free", "PDP_STANDARD_DELIVERY_FREE": "Delivery: Free", "LOCAL_PDP_AVAILABLE_IN_HUB_AFTER_1_WITH_STORENAME": "Reserve now, collect from first thing tomorrow at {0}", "AVAILABLE_MSG_4_TODAY": "Order now, collect from 4pm today", "ISALTM_HOME_DELIVERY_POSTCODE_NOT_DELIVERABLE_R2": "Sorry, we don't currently delivery to <span id=\"postCodeNotDel\">{0}</span>. Please try another postcode.", "AVAILABLE_MSG_LEAD_DAYS": "Order now, collect in {0} days", "LOCAL_PDP_AVAILABLE_IN_HUB_AFTER_1_R2": "Order now, collect first thing tomorrow at {0}", "LOCAL_PDP_AVAILABLE_IN_HUB_BEFORE_1_WITH_STORENAME": "Order now, collect from 4pm today at {0}", "AVAILABLE_MSG_FIRST_THING": "Order now, collect from first thing tomorrow", "PDP_STANDARD_DELIVERY_CHARGE_ADDO": "Delivery from: &pound;6.95", "PARTIAL_QUANTITY_LOCAL_PDP_AVAILABLE_IN_HUB_BEFORE_1": "Only {0} available. Order now, collect from 4pm today", "ISALTM_HOME_DELIVERY_LEAD_DAYS1": "<strong>Order now</strong> for delivery to <strong id=\"postCodeLeadDays1\">{1} </strong> within <span id=\"isAltmLeadDays1\">{0}</span> days", "LOCAL_PDP_AVAILABLE_IN_STORE": "Order now, collect immediately", "ISALTM_HOME_DELIVERY_LEAD_DAYS2": "<strong>Order now</strong> for delivery to <strong id=\"postCodeLeadDays2\">{1} </strong> within <span id=\"isAltmLeadDays2\">{0}</span> days", "LOCAL_PDP_AVAILABLE_IN_HUB_AFTER_1": "Order now, collect first thing tomorrow", "LOCAL_PDP_AVAILABLE_IN_HUB_BEFORE_1_R2": "Order now, collect from 4pm today at {0}", "PDP_STANDARD_DELIVERY_CHARGE_ADSI": "Standard delivery: &pound;3.95", "ISALTM_HOME_DELIVERY_REQUEST_ERROR": "Sorry, we can&#39;t check stock. Please try again soon", "LOCAL_PDP_AVAILABLE_IN_STORE_WITH_STORENAME": "Order now, collect immediately at {0}", "LOCAL_ERROR_MESSAGE_IN_HUB": "Sorry, we dont currently deliver to <strong>{0}</strong>", "STOCK_CHECK_FAIL": "<strong>Sorry</strong>, we can't currently check stock. Please try again soon." }

Casio FX991ES Plus Dual Powered Scientific Calculator.

Product code:107/8237

  • £17.99
  • was £19.99
  • Save 10%
Product rating
4.8 out of 5 stars (32)

Technology Summary

The Casio FX-991ES Plus is Casio's most advanced scientific calculator with 417 mathematical functions. Recommended for Advanced GCSE, A/AS Levels and Highers. Dual powered (solar with battery back-up).

This advanced model allows Matrix, Equation, Integration and Differential calculations as well as Random Integers, Scientific Constants and Metric Conversions. The large natural texbook display (Natural V. P. A. M. ) shows mathematical expressions as they appear in your textbooks.

  • Suitable for GCSE, A Level and above.
  • LCD display.
  • 9 data memory.
  • Non-stick keys.
  • 10+2+15 -digit display.
  • Auto shut-off.
  • 417 functions.
  • Verify function.
  • Algebraic logic.
  • Regression analysis.
  • Statistical functions.
  • Hyperbolic.
  • 24 levels of parenthesis.
  • Metric conversions.
  • Dual power source - solar.

General information:

  • Batteries required 1 x button cell (included).
  • Manufacturer's 3 year guarantee.
  • EAN: 4971850182276.
Full Details

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Argos Credit Offers

Up to 56 days to pay

when you buy with the Argos Card. Representative 29.9% APR variable


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Technology Product description / spec

The Casio FX-991ES Plus is Casio's most advanced scientific calculator with 417 mathematical functions. Recommended for Advanced GCSE, A/AS Levels and Highers. Dual powered (solar with battery back-up).

This advanced model allows Matrix, Equation, Integration and Differential calculations as well as Random Integers, Scientific Constants and Metric Conversions. The large natural texbook display (Natural V. P. A. M. ) shows mathematical expressions as they appear in your textbooks.

  • Suitable for GCSE, A Level and above.
  • LCD display.
  • 9 data memory.
  • Non-stick keys.
  • 10+2+15 -digit display.
  • Auto shut-off.
  • 417 functions.
  • Verify function.
  • Algebraic logic.
  • Regression analysis.
  • Statistical functions.
  • Hyperbolic.
  • 24 levels of parenthesis.
  • Metric conversions.
  • Dual power source - solar.

General information:

  • Batteries required 1 x button cell (included).
  • Manufacturer's 3 year guarantee.
  • EAN: 4971850182276.

Additional Information

Prices correct as displayed but are subject to change

Q&A's

  •  Questions
  •  Answers
Read all Q&A Be first to ask a question





Delivery costs & reservation information

Delivery charge - £3.95

Order now for delivery within 2 days

Monday - Friday between 7am and 8pm.Saturday between 7am and 6pm.Order before 5pm for Next day delivery. You only pay one delivery charge per order. If ordering several items, it will be the highest of the individual charges, no matter how many additional items you order.

Reserve for store pickup - Free

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Select the Buy now, pay later plan presented at the checkout to pay for your purchases with your Argos Card.

Representative 29.9 % APR variable. Buy Now, Pay Later : Pay off a "Buy Now, Pay Later" Plan by the end date and you pay no interest.If you don't pay in full by the end date, you'll be charged interest on the daily balance from the date of purchase. However, if you choose to make payments without clearing the balance, the earlier you pay the less interest you'll be charged.

Fixed Payment Plan.Representative example: Spend £450, make 36 monthly payments of £18.25, total repayable £656.91, 29.9% APR fixed.Interest Free Credit available if shown. Representative example: 4 years Interest Free Credit. Cash price and total amount of credit 624. No deposit, pay 48 payments of 13.00 at a fixed interest rate of 0%. Total amount payable 624. Representative APR 0% fixed.

Representative 29.9% APR variable

The APR relates to the Argos Card as a whole and is variable. The interest rate for the Fixed Payment and Interest Free Credit plans will be fixed.

Store card credit for Argos Ltd is provided exclusively by Home Retail Group Card Services Ltd, part of the same group and both at 489-499 Avebury Boulevard, Milton Keynes, MK9 2NW.

© Argos Limited 2014. All Rights Reserved.

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