Casio Fx-991Ex Engineering/Scientific Calculator, Black (EUropean Version), 7.6 cm X 6.5" 0.10.2 cm

Great scientific cal

Just what he needed for school and at a food price.

Great for school and university

Good calculator. Economy range.

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)

Excellent product and value for money.

I’ve purchased for my son who is going to AS level. Excellent product and value for money. Original and fast delivery. Thanks

Difficult to find this product on Amazon and was concerned a different model would be delivered but it came on time and was accurate!

Lots of functionality and easy to use. The combination of battery and solar is welcome as well. Great for kids and adults.

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.

É muito boa, cumpre bem sua função o único adendo é que ela é em inglês e não tem opção de troca de idioma.

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.

excelente calculadora, ya llevo 3 años con ella y sigue funcionando bien, aunque la parte blanca se mancha super facil y ya no se quita, en si el funcionamiento es muy bueno, excelente si estudias ingeniería