Casio FX-991ZA Plus Scientific Calculator


17 reviews

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R 449

eB4 490

Discovery Miles  4 490

In Stock
This item is in stock in our CPT warehouse and can be shipped from there.You can also collect it yourself from our warehouse during the week or over weekends.
This item is in stock in our JHB warehouse and can be shipped from there. No collection facilities available, sorry!

When do I get it?

Prepaid codes are delivered to you via email as soon as payment has been approved.

When do I get it?

Once payment has been approved, purchased eBooks are added to your Digital Library, ready for you to download.

When do I get it?

Gift vouchers are delivered via email to the recipient as soon as payment has been approved.

Of course you want to know — When do I get it?

We strive at all times to get it to you on time but here are some indications:

If we say In Stock, we dispatch within the time frame of the shipping plan you selected.

If we say In Stock (You can also collect in cpt), the stock is available from our Cape Town warehouse and you can collect on the same working day if your payment has been authorised and you collect before 5pm.

If we say dispatched between X and Y days then it takes X to Y days to receive from a supplier and it will then be with you within the time frame of the shipping plan you selected.

If we say Pre-order it means that your item will be dispatched to you on the day it's released and arrive with the time span of the shipping plan you chose.

And then there's the Weekend. In order to receive goods on the weekend, select our weekend delivery option when checking out.

If this is all too confusing, call us on 087 362 8000 or send an e-mail to One of our friendly employees will get back to you pronto.

Eligible for Cash on Delivery. Learn more

What does this mean?

You can pay for this item with cash when your driver delivers your goods.

How does it work?

Select Cash On Delivery (COD) as your payment option when you checkout. Have the exact amount of cash ready for our friendly delivery driver when he arrives.

Is COD available on every order?

No. We don’t offer COD for:

  • Digital products (e.g. eBooks, gift vouchers or airtime)
  • Customised products (e.g. a sports shirt printed with a personalised name)
  • Orders totalling R5,000 or more
  • Orders being collected from our warehouse
  • Delivery addresses falling outside of our Mr D. Courier area

  • If your order is eligible for COD, it will be displayed as a payment option for you at checkout.

    Free delivery available | 

    Free Exchanges & Returns for 30 days. Learn more

    Free Exchanges & Returns for 30 Days


    If you are not completely satisfied with your purchase, simply return the items to us in their original condition and packaging within 30 days of receipt and we will issue a credit which can be used to place a new order.

    Exchanges (Fashion, sportswear and shoes only)

    Wrong size? Don't quite like the colour? You can exchange your purchased item for a different size and/or colour up to 30 days from the day you received it, completely free of charge.

    The item must be unworn and unused (other than trials) with the original tags still attached. Packaging should be returned in an undamaged condition with the item

    When does this policy not apply?

    If the item is:
    • older than 30 days
    • opened, unsealed, used or missing any accessories
    • a digital product such as an eBook, electronic voucher, gaming code or other digital download;
    • an audio or video recording or computer software that has been unsealed;
    • a newspaper, periodical or magazine;
    • a foodstuff, beverage, or other product intended for everyday consumption;
    • a nursing or maternity product that has been unsealed, including (but not limited to) breast pumps, bottles, formula, maternity underwear, nappies and wipes;
    • a beauty product or fragrance which has been used; or
    • a product which has been personalised for you or made to your specifications.

    Find out more about Exchanges & Returns

    Casio FX-991 ZA Plus Scientific Calculator.

    Developed in collaboration with SA educators for the South African Curriculum
    Natural Textbook Display.

    - 433 Functions
    - Non-Programmable
    - Q1, Med, Q3 calculations in statistics
    - Dual table mode - f(x) & g(x)
    - Min / Max in EQN MODE
    - No Solution / infinite solutions in EQN MODE
    - Previous answer key
    - n-th Power of a complex number
    - Distribution calculation mode
    - Prime factorisation
    - Auto power off - 10min / 60min

    South Africa
    Casio FX-991ZA Plus Scientific Calculator
    Bundle deals expire when stock runs out. T&Cs apply

    Mpho, South Africa. 14 October 2015

    Must have for engineers and mathematicians

    Carel, South Africa. 2 November 2016

    I wish I had this calculator when I started Standard 6 in 1998 already!
    Truly one of the best things I've bought in years, which should last me the rest of my life.
    This calculator has given me the confidence I should have had when I was still at school!
    The question is not what can the FX991 do, but rather, what can't it do!

    Lourens, South Africa. 2 September 2016

    Great calculator, step up from your standard models. Perfect for engineering studies.

    Mario, South Africa. 23 October 2015

    The right calculator to write the Government Certificate of Competency exams with.

    lwa, South Africa. 6 August 2016

    Life made easy, offers a lot of functions needed for advance mathematics. Superb service from

    snowball, South Africa. 28 September 2015

    best calculator for engineering students. it has soo many useful functions which simplify life e.g. complex calculations, matrices, intergration, differentiation, solving quadratic equations...

    Rishad, South Africa. 4 February 2017

    Great calculator. this model is currently the best for Grade 10 to matrics for our current S.A schools.

    Malwande, South Africa. 31 March 2016

    Great engineering calculator.

    Claudie, South Africa. 3 November 2016

    Great calculator!

    John, South Africa. 29 October 2015

    Great price for a great calculator.

    M Alberts, South Africa. 5 November 2015

    Great for engineering students

    Shelley, South Africa. 4 February 2016

    Good value.

    Mr Dakome, South Africa. 3 February 2016


    Kristen, South Africa. 26 January 2017

    Good quality

    mufunwa, South Africa. 9 August 2016

    The product met my expectations

    Quinton, South Africa. 13 October 2016

    Best one, very awesome!

    Zaziwe, South Africa. 5 November 2016

    perfect, thank you guys

    R 449

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