Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural

Excellent calculator, it is an older model but it has all the necessary capabilities, and it arrived next day promptly for my exam.

Saved my exam as i got it at the last second after finding out my normal calculator is banned. Had all the functions I needed for my university mathematics and physics exams.

Great calculator for my son’s engineering class

Slow processor when doing complex number

Bought for my son (sitting GCSEs) to replace his old calculator. Apparently this one is far better than his old one so that's a win.

I like the calculator

Brilliant love the older model and this is the same.

Good for GCSE and A Level maths revision and exam

Si estás buscando una calculadora científica completa y fiable, esta es la mejor opción del mercado. Tiene tapa protectora, ideal para llevarla sin preocuparte por golpes o arañazos. Además, al ser Casio, viene con la garantía de calidad de una marca de confianza. Lo que más me ha gustado es su función de notación natural: las operaciones y fracciones se ven igual que en los libros, lo que facilita muchísimo el trabajo y evita errores al interpretar resultados. Es rápida, precisa y muy intuitiva. En resumen, una calculadora inmejorable para estudiantes de secundaria, bachillerato e incluso universidad. ¡Un acierto total!

Bardzo dobry - kupiłem dla syna studenta - zachwycony

Excellent

Five stars, since it is a decent, and affordable calculator for highschoolers. Personally, I was looking for something more, but this got pretty much the essentials; - binary/octal/decimal/hexadecimal conversions - imaginary numbers - summation - decent display utilising a matrix dot display. I am a bit disappointed with how it does seem clunky to use at times, and the interface is rather inconsistent. (eg. ×10ⁿ being one unit / seperate) Furthermore, other modes feel... limited.

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