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

The Casio fx-991ES Plus 2nd Edition is a perfect blend of "old school" dependability and modern functionality. It maintains the legendary Casio quality that has made it a staple in classrooms and engineering offices for years. What I love: Natural Textbook Display: This is a total game-changer. It displays fractions, roots, and exponents exactly as they appear in textbooks, making complex equations much easier to input and understand. Incredible Functionality: With 417 functions, it handles everything from basic trigonometry and statistics to advanced calculus, matrix calculations, and equation solving with ease. Bulletproof Build: The redesigned body feels solid and durable, featuring wear-resistant printing and a secure slide-on hard case that stands up to daily use in a backpack. Dual Power Reliability: The combination of solar and battery power (LR44) means it’s always ready to go, whether you're in a brightly lit lab or a dimly lit lecture hall. Intuitive Layout: The color-coded keypad and ergonomic design make it easy to navigate, striking a great balance between high-end features and simple, no-fuss operation. Whether you’re a student or a pro, this calculator is a reliable "math companion" that offers exceptional performance and value. It's a five-star workhorse that gets the job done every time.

Top-notch scientific calculator. Natural Textbook Display, 417 functions, compact & durable. Perfect for math, physics, or engineering students

Muy buen producto

Need to take the FE/PE? The test is limited to a few models. This is the best algebraic allowed: 1) good menu organization, easy to use 2) 2nd and 3rd degree polynomial solvers 3) 2 and 3 element matrices and vectors 4) numeric derivatives and integrals 5) complex numbers 6) engineering notation 7) constants and conversions All built-in, no need to program. A big plus is cost is nominal. One drawback to this model is it slides all over. Add rubber feet to case bottom as a fix. (see pic)

Muy bien producto, mi hija la usa para la universidad y ha sido de gran ayuda para ella

My kid says it works great! The price wasn't too bad either. My child was able to find and use all the functions a bit easier than other scientific calculators before. The box did come in a bit beat up but all good so far.

Good for school

Casio es lo mejor en calculadoras

Bardzo dobry - kupiłem dla syna studenta - zachwycony

Nice calculator, easy to use and professional

Perfect for son’s A level exams

Great calculator compact durable has all the functions you ever need would recommend

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.