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The Casio FX-991CW is a solar-powered advanced scientific calculator featuring a 2.25-inch high-resolution LCD that displays complex data like spreadsheets and 4x4 matrices. With 552 functions including numeric integration and differentiation, it supports middle school to college-level math and engineering tasks. Its natural textbook display ensures formulas appear exactly as in textbooks, enhancing clarity and reducing errors. Lightweight and highly rated, it’s a top choice for professionals and students aiming for precision and speed.
| ASIN | B0BSJ33C4R |
| Best Sellers Rank | #9,020 in Office Products ( See Top 100 in Office Products ) #54 in Scientific Calculators |
| Brand | Casio |
| Calculator Type | Engineering/Scientific |
| Color | Black |
| Colour | Black |
| Customer Reviews | 4.7 out of 5 stars 2,173 Reviews |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Dimensions L x W | 7.7L x 16.2W centimeters |
| Item Type Name | Casio Advanced Scientific Calculator |
| Item Weight | 3.35 Ounces |
| Manufacturer | Casio |
| Mfr Part Number | FX-991EX |
| Model Name | FX-991CW |
| Model Number | FX-991CW |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Number of Items | 1 |
| Number of batteries | 1 LR44 batteries required. (included) |
| Power Source | Solar Powered |
| Power source | Solar Powered |
| Screen Size | 2.25 Inches |
| Screen size | 2.25 Inches |
| UPC | 889232615011 |
| Unit Count | 1 Count |
| Warranty Description | 1 YEAR |
R**A
Best calculator <3
Best calculator i ever used it does need time to learn but honestly didn’t deter me from loving it
T**A
Good one
Good item... For starting high school
E**A
Ok
Ok
A**I
very unnecessary complex ways to find the solution
it does every calculation needed but I got it instead of fx991ex and it is very complex to use to do simple differentiation you have to press so many buttons to get to it and its not clear I had to google it to know where it was while ALL the other calculators have the differentiation and integration as a one button Also to change the format from decimals to fractions and the other way you have to press many buttons it is the same for Eng notation
A**I
What I expected
I expected it to have an lcm feature but it’s alright.
R**N
Very amazing product
Small PC:)
M**O
Ottima
Ottima per i calcoli e le funzioni che ha sono legittime e funzionali
A**X
Very powerful scientific calculator
Incredible calculator once you understand the slightly different UI. I miss my 991-ES buttons on the front but it makes up for it with other features
F**O
Excellent calculator with great features
The Casio fx-991CW is an excellent calculator with very good performance and a wide range of useful features. It is easy to use, fast, and well designed, making it perfect for students and professionals who need reliable calculations. The display is clear and the overall build quality feels solid and durable. I also want to highlight that the Amazon delivery time was reasonable, especially considering that this was an international transaction. The product arrived well packaged and in perfect condition. Overall, I am very satisfied with this purchase and would definitely recommend this calculator.
ジ**ジ
機能的な
よかったです
P**O
Excelente calculadora científica
Ótima calculadora científica, de qualidade. Esta versão sem o LA (creio que seja de Latin America), não possui idioma português, somente inglês. Comprei já sabendo disso e pra mim, tudo tranquilo.
Trustpilot
2 weeks ago
2 months ago