🔬 Elevate your calculations — because precision is the new power!
The Casio Fx-991Ex is a European version scientific calculator featuring 552 functions, including integral and differential calculations, powered by battery and equipped with a high-resolution LCD display. Compact and lightweight, it is a top choice for students and professionals seeking accuracy and versatility in a sleek design.
| ASIN | B00ZZ93346 |
| Best Sellers Rank | #23,667 in Office Products ( See Top 100 in Office Products ) #72 in Scientific Calculators |
| Department | Office Equipment & Equipment Supplies |
| Item model number | FX-991EX |
| Manufacturer | Casio Computer Co., Ltd |
| Product Dimensions | 23.01 x 14.2 x 2.69 cm; 91 g |
U**R
Right product delivered
Difficult to find this product on Amazon and was concerned a different model would be delivered but it came on time and was accurate!
M**A
Favorite non-graphic calculator
Great for school and university
M**H
Great
Excellent product and value for money.
I**H
Purple line appeared 2 weeks after buying
I bought this calculator for my son on the 30th of April and now a purple line has appeared and half the screen has disappeared. I think it is a defective piece. I would like the seller to contact me immediately and depending on the service I get I will consider changing my review 3rd June Update: I am changing my review from 1 star to 5 star as the seller diligently replaced my faulty calculator (I assume after examining it)
T**R
Good product
Good calculator. Economy range.
P**I
Perfect for school
Just what he needed for school and at a food price.
م**د
ممتاز
انصح به
D**R
Very nice
Excellent product
A**R
Lots of functionality and easy to use. The combination of battery and solar is welcome as well. Great for kids and adults.
S**N
I saw a review saying that it's not genuine so I was a little worried. But don't worry, I can assure you that it was 100% genuine, I did the authenticity checks with the QR code generation and checking the battery compartment. This costs the same as the fx-97SG you can get at Popular but with way more functions! You have logarithms with customisable bases, stored numerical constants, a series generator, differential and integral calculator, prime factor decomposition, solving for x and many more. If you are an engineering student this is the perfect calculator for you. It will save your butt during your exams because you can directly obtain your answer from the calculator so you'll be able to spot any careless mistakes in your working.
D**D
Muy bueno el producto, llego muy rápido.
M**S
Não é uma calculadora barata, mas investi nela por recomendações de professores e de outros alunos e não tenho arrependimentos, de fato foi uma compra que valeu a pena e recomendo para cursos de engenharia ou outro na área de exatas. Comprei ela em março/abril de 2022 e estou avaliando em novembro de 2022, até hoje nunca apresentou defeitos ou falhas perceptíveis, veio bem embalada e em ótimo funcionamento. Acredito que vá durar bastante e será minha fiel aliada nessa caminhada
J**P
Studeer je elektrotechniek? Koop dit apparaat! Deze rekenmachine is toegestaan op de tentamens, omdat het geen grafische rekenmachine is. Wel heeft de rekenmachine de functionaliteit om matrices te vermenigvuldigen, bepaalde integralen te berekenen, a+bj en modulus hoek notatie en ga zo maar door. Het scherm heeft een hoge resolutie en is goed leesbaar, zie geen redenen om deze rekenmachine niet te kopen.
