🧠 Master your math game with Casio FX-991ES — where precision meets power!
The Casio FX-991ES scientific calculator features a natural textbook display, multi replay function for editing calculations, and list-based statistical data entry. Lightweight and protected by a slide-on hard plastic case, it supports advanced calculus operations and is ideal for students and professionals from Keystage 3 upwards.
| ASIN | B0009FHRPW |
| Brand | Casio |
| Calculator Type | Engineering/Scientific |
| Color | Silver |
| Customer Reviews | 4.6 out of 5 stars 567 Reviews |
| Global Trade Identification Number | 04971850167037 |
| Item Weight | 105 g |
| Manufacturer | Casio |
| Mfr Part Number | FX-991ES |
| Model Number | 271239 |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Power Source | Battery Powered |
M**R
Great calculator!
This calculator is really great! My roommate has had this calculator for all of college so far (we are seniors) for engineering work, and he loves it. After getting this and getting used to it, I really love it. The ability to go back and modify equations and also to do differential and integral calculus is very useful.
K**N
Five Stars
Great price - works great
A**K
Great calculator with great value for money
Amazing calculator does everything you would want on something that's not a GDC
A**I
Five Stars
My favorite calculator ever.
M**R
Five Stars
Good
V**R
Manual in Chinese - TWICE!
I think the calculator is a good one, but the manual that came with it was in Chinese or some other oriental language - just a flimsy and impractical fold out in English. I returned the first one I got for that reason, with assurance from the Amazon rep that the next one should have a manual in English. Unbelievable! I don't really fault Amazon, but the seller, Port Trading US. Product should have been clearly marked as having manual in Chinese, and not English. My daughter is leaving for college in next day or so, so she'll just have to download a pdf and deal with it.
J**B
Does it's job
Does it's job. Doesn't have a Mod button - but a decent calculator overall.
I**O
Three Stars
good calculator, but wrong model.
C**N
Calculadora con fallo en la función SOLVE
No me llegó este modelo sino otro peor y le falla la función solve ( la respuesta es siempre can’t solve) que es era lo más importante para mí, así que muy mal.
ボ**王
液晶が見やすい
難を言えば、取説の文字が細かすぎて、弱視の私には見にくい。 もっと、ユニバーサルデザインの配慮がほしい。
B**A
Product that matches expectations
This is exactly what my son wanted
G**A
Pretty Useful
Its Multifunctional and pultipurpose with so many functions that allow users to perform complicated calculations.
A**X
Calcolatrice ottima
ottima per tutti coloro che non lavorano semplicemente con i "numerelli" , ma usano anche notazioni fratte , devono integrare e derivare funzioni . In poche parole è la calcolatrice PERFETTA
Trustpilot
5 days ago
1 week ago