--- product_id: 516361960 title: "Casio fx-991CW Advanced Scientific Calculator (UK Version)" brand: "casio" price: "S/.216" currency: PEN in_stock: true reviews_count: 13 category: "Casio" url: https://www.desertcart.pe/products/516361960-casio-fx-991cw-advanced-scientific-calculator-uk-version store_origin: PE region: Peru --- # Approved for all UK exams Compact 16.2 x 7.7 cm size Dual solar & battery power Casio fx-991CW Advanced Scientific Calculator (UK Version) **Brand:** casio **Price:** S/.216 **Availability:** ✅ In Stock ## Summary > 📐 Master your exams with the UK’s top advanced scientific calculator! ## Quick Answers - **What is this?** Casio fx-991CW Advanced Scientific Calculator (UK Version) by casio - **How much does it cost?** S/.216 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/516361960-casio-fx-991cw-advanced-scientific-calculator-uk-version) ## Best For - casio enthusiasts ## Why This Product - Trusted casio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **UK Exam Approved:** Trusted and approved for Key Stages 3-5, GCSE Higher, A/AS Level, and SQA Higher exams. - • **Compact & Lightweight:** Sleek 16.2 x 7.7 cm design weighing just 100g fits perfectly in your study kit or bag. - • **Exam-Ready Powerhouse:** Dual solar and battery power ensures uninterrupted use during critical exams. - • **Eco-Conscious Innovation:** Built with sustainability in mind, featuring recycled materials and a 3-year warranty for long-term reliability. - • **Advanced Scientific Functions:** Equipped with all essential functions to tackle complex maths, science, and engineering problems. ## Overview The Casio FX-991CW is the UK’s best-selling advanced scientific calculator, designed for students and professionals alike. It features dual solar and battery power for reliable use, a compact and lightweight design, and is approved for all major UK exams including GCSE and A-levels. With advanced functions and eco-friendly materials, it’s the smart, sustainable choice for exam success. ## Description From the brand About Casio Founded by the four Kashio brothers, Casio was established in 1957 with the invention of the world’s first compact all-electric calculator. Ever since, innovation has been the mainstay of Casio’s business and has led to a raft of inventions that have improved daily life for generations of customers. About Casio Founded by the four Kashio brothers, Casio was established in 1957 with the invention of the world’s first compact all-electric calculator. Ever since, innovation has been the mainstay of Casio’s business and has led to a raft of inventions that have improved daily life for generations of customers. Our new ClassWiz+ range is now availiable to shop! fx-CG100 Best Sellers Visit the store Best Sellers Visit the store Built with purpose We’re pleased to introduce the new range of fx-85GT CW+ ClassWiz models, which form part of the new ClassWiz+ model range. Made using up to 90% recycled materials, depending on model, the range will be available in four colour choices, with a standout new green model leading the collection. Sustanability is a journey The CW+ range uses recycled materials. PCR plastic is made from items that have already been used and discarded. By using this material instead of relying on new plastics, we reduce waste and lower the environmental impact of production. Built with purpose We’re pleased to introduce the new range of fx-85GT CW+ ClassWiz models, which form part of the new ClassWiz+ model range. Made using up to 90% recycled materials, depending on model, the range will be available in four colour choices, with a standout new green model leading the collection. Sustanability is a journey The CW+ range uses recycled materials. PCR plastic is made from items that have already been used and discarded. By using this material instead of relying on new plastics, we reduce waste and lower the environmental impact of production. Shop the new ClassWiz+ Range Visit the store Shop the new ClassWiz+ Range Review: Very good - Very good calculator for gcse year 11 students. As a year 11 student it has helped me in all subjects maths,science and geography wihtout any issues. very good investment for your kid. It is easy to use and has lot's of buttons and hihg battery life because it is constantly charged by solar pannels Review: Amazing calculator. - Fabulous calculator and has all the functions needed to pass maths and science even solving simulations equations. It is definitely worth the money in the long run and has solar power so no need for batteries. Take a while to get used to but when you do it’s easy. all exam boards approved and a great calculator overall. ## Features - Casio fx-991 is the UK’s best-selling ‘advanced scientific’ calculator. - fx-991 CW is the new upgraded version of the fx-991 EX - Allowed in every UK exam where a calculator can be used - Approved for Key stages 3, 4 and 5, recommended for Advanced GCSE, A/AS level and Highers - Dual powered, solar with battery back up and auto power-off - Ideal exam calculator for: GCSE Higher SQA Higher ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BVVZYNQH | | Best Sellers Rank | 146 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 2 in Scientific Calculators | | Brand Name | Casio | | Calculator Type | Graphing | | Colour | black | | Customer Reviews | 4.6 4.6 out of 5 stars (2,357) | | Display Type | LCD | | Enclosure Material | Plastic | | Item Dimensions L x W | 16.2L x 7.7W centimetres | | Item Weight | 100 Grams | | Manufacturer | Casio | | Manufacturer Contact Information | Casio Computer Co., Ltd. | | Manufacturer Part Number | FX-991CW-W-UT | | Model Name | Casio FX-991CW Advanced Scientific Calculator (UK Version) | | Model Number | FX-991CW-W-UT | | Number of Batteries | 1 LR44 batteries required. | | Power Source | Solar Powered | | Product Warranty | 3 year guarantee | | Screen Size | 2.5 Inches | ## Product Details - **Brand:** Casio - **Calculator Type:** Graphing - **Colour:** black - **Display type:** LCD - **Material:** Plastic - **Model name:** Casio FX-991CW Advanced Scientific Calculator (UK Version) - **Number of batteries:** 1 LR44 batteries required. - **Power source:** Solar Powered - **Product dimensions:** 16.2L x 7.7W centimetres - **Screen size:** 2.5 Inches ## Images ![Casio fx-991CW Advanced Scientific Calculator (UK Version) - Image 1](https://m.media-amazon.com/images/I/714Av0FqCnL.jpg) ## Questions & Answers **Q: Is this suitable for university level** A: It depends. I know from experience that Open University maths exams do not allow calculators that can evaluate integrals so, in that case, this would not be allowed. I would ask the faculty what calculators are permissible in exams as this might also depend on the module, as well as the institution. **Q: Does this calculator have a linear regression function?** A: Yes. A quick search on youtube for LG produced results. Good luck! **Q: Does this have CAS?** A: No this calculator does not have CAS. CAS stands for "Computer Algebra System", which means that calculators with this do symbolic algebra. This is why CAS calculators are banned in most exams. **Q: Does it have graphical computing capabilities? I need to take a math test, the calculator is not allowed to graph calculation function.** A: No but it will work out tables of values for you. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good *by S***H on 20 March 2026* Very good calculator for gcse year 11 students. As a year 11 student it has helped me in all subjects maths,science and geography wihtout any issues. very good investment for your kid. It is easy to use and has lot's of buttons and hihg battery life because it is constantly charged by solar pannels ### ⭐⭐⭐⭐⭐ Amazing calculator. *by C***S on 5 April 2026* Fabulous calculator and has all the functions needed to pass maths and science even solving simulations equations. It is definitely worth the money in the long run and has solar power so no need for batteries. Take a while to get used to but when you do it’s easy. all exam boards approved and a great calculator overall. ### ⭐⭐⭐⭐⭐ Superb *by A***W on 7 July 2024* The Casio FX-991CW Advanced Scientific Calculator (UK Version) is an exceptional tool for students and professionals who require advanced mathematical capabilities. This calculator is designed to handle a broad range of functions, making it a valuable asset for tackling complex mathematical, engineering, and scientific problems. One of the standout features of the Casio FX-991CW is its large, high-resolution LCD display. This allows for clear and detailed visualization of equations, graphs, and data, reducing the risk of errors and making it easier to follow multi-step calculations. The display is capable of showing multiple lines of text, which is particularly beneficial for complex equations and when reviewing previous calculations. The FX-991CW offers over 552 functions, making it one of the most versatile calculators available. It supports a wide array of mathematical operations, including basic arithmetic, algebra, calculus, and statistics. This model also includes specialized functions for engineering and scientific applications, such as integration, differentiation, and matrix calculations. This makes it an ideal choice for advanced students and professionals in STEM fields. The calculator's intuitive interface is another significant advantage. The keys are ergonomically designed and clearly labeled, ensuring efficient and accurate input. The calculator also features a natural textbook display, which shows mathematical expressions as they appear in textbooks, enhancing readability and comprehension. Durability and portability are key strengths of the Casio FX-991CW. Its robust build ensures it can withstand the demands of daily use, while its compact size makes it easy to carry in a backpack or briefcase. Additionally, the calculator is solar-powered with a battery backup, providing reliable operation without frequent battery replacements. The Casio FX-991CW is also exam-friendly, adhering to the regulations of major exam boards, making it a suitable choice for students preparing for standardized tests. Overall, the Casio FX-991CW Advanced Scientific Calculator (UK Version) is a top-tier tool that combines extensive functionality with user-friendly design. Its comprehensive features, clear display, and durable construction make it an invaluable resource for anyone engaged in advanced mathematical, engineering, or scientific work. ## Frequently Bought Together - Casio fx-991CW Advanced Scientific Calculator (UK Version) - Helix Oxford Maths Set with Storage Tin - 10 Piece Maths Equipment Set - Zamasha Clear Pencil Case Black | 22x4x9 cm Stylish, Practical and Transparent Pencil Case | Versatile Storage for Stationery, Toiletries, Makeup, Travel & Office Supplies --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pe/products/516361960-casio-fx-991cw-advanced-scientific-calculator-uk-version](https://www.desertcart.pe/products/516361960-casio-fx-991cw-advanced-scientific-calculator-uk-version) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-04-23*