---
product_id: 723523460
title: "Casio Fx-991ES Scientific Calculator"
brand: "casio"
price: "87424₫"
currency: VND
in_stock: false
reviews_count: 6
url: https://www.desertcart.vn/products/723523460-casio-fx-991es-scientific-calculator
store_origin: VN
region: Vietnam
---

# Advanced statistical table input Natural textbook display Function & expression calculations Casio Fx-991ES Scientific Calculator

**Brand:** casio
**Price:** 87424₫
**Availability:** ❌ Out of Stock

## Summary

> 📐 Elevate your calculations—because precision is the new power move.

## Quick Answers

- **What is this?** Casio Fx-991ES Scientific Calculator by casio
- **How much does it cost?** 87424₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/723523460-casio-fx-991es-scientific-calculator)

## Best For

- casio enthusiasts

## Why This Product

- Trusted casio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Textbook-Style Display:** View fractions, roots, and expressions exactly as in your textbooks for intuitive learning and error-free calculations.
- • **Function Graphing Support:** Easily compute and display function values over variable ranges, perfect for data-driven decision making.
- • **Trusted Casio Reliability:** Durable, lightweight plastic design backed by Casio’s legacy ensures long-lasting performance for professionals on the go.
- • **Advanced Mathematical Capabilities:** Calculate complex functions including logarithms, factorials, roots, and random numbers with precision.
- • **Comprehensive Statistical Functions:** Input and analyze statistical data effortlessly with table-based entry and built-in statistical calculations.

## Overview

The Casio Fx-991ES Scientific Calculator offers a natural textbook display for clear visualization of fractions and roots, advanced statistical data input via tables, and robust function calculations including logarithms, factorials, and random numbers. Designed with durable plastic and trusted Casio engineering, it’s the essential tool for professionals and students demanding accuracy and efficiency.

## Description

¦ Expression and signs, such as a mathematics natural display fraction and root, can be displayed as a textbook. Moreover, a calculation result can be displayed by expression containing a fraction an

## Features

- Expression and signs, such as a fraction and root, can be displayed as a textbook. Moreover, a calculation result can be displayed by expression containing a fraction and root
- Statistical data can be intelligibly inputted in the form of a table, and it can use for statistic calculation.
- A triangle and a reverse triangle, logarithm and an index, ベキ 乗 and the ベキ root, root, the square, the cubic root, a reciprocal, a random number, a factorial (except for fx-61F), pi.
- f(x) value over x value is calculated and function expression f(x) is displayed by list

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Casio |
| Brand | Casio |
| Model Number | 271239 |
| Material | Plastic |
| Manufacturer Part Number | FX-991ES |
| Manufacturer | Casio |

## Product Details

- **Brand:** Casio
- **Calculator Type:** Engineering/Scientific
- **Power Source:** Battery Powered
- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Model Name:** Fx 991ES

## Images

![Casio Fx-991ES Scientific Calculator - Image 1](https://m.media-amazon.com/images/I/61brq8LPK2L.jpg)
![Casio Fx-991ES Scientific Calculator - Image 2](https://m.media-amazon.com/images/I/61fhnkp0JDL.jpg)

## Questions & Answers

**Q: i wana ask which is better for university eng major this one or the 115es ?**
A: You need to be careful on this one- my son has the ES. Some schools will not let you use the calculators with graphing on them! Check with your engineering dept. Also, you might want a different calculator for your math classes. My son has both, but uses the ES for his engineering.

**Q: Does this Casio replay the equation that you were working on, after it times-out and you turn it back on?**
A: If you after it turns off ?It doesnt replay your equation after it turns off then turn it back on. It only shows the last answer that was calculated. It can only memorize the last output before shutting down

**Q: is it the old model of fx-991es or the new fx-991es plus**
A: fx-991es only

## Customer Reviews

### ⭐⭐⭐⭐⭐ Pretty Useful
*by G***A on 28 July 2024*

Its Multifunctional and pultipurpose with so many functions that allow users to perform complicated calculations.

### ⭐⭐⭐⭐⭐ Five Stars
*by N***S on 31 July 2015*

One of the best more features and natural display. I've

### ⭐⭐⭐⭐ Nice
*by V***I on 7 December 2018*

Go for it

## Frequently Bought Together

- Casio FX-991ES / FX-991-ES-PLUS Calculator
- Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural
- (Spanish Version) Casio FX-991ES Plus-2nd Edition Scientific Calculator

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**Shop now:** [https://www.desertcart.vn/products/723523460-casio-fx-991es-scientific-calculator](https://www.desertcart.vn/products/723523460-casio-fx-991es-scientific-calculator)

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-04*