Optimal tamquocquananh.vncation tools realized through a design that emphasizes comfort in the hand, legibility, and usability through the pursuit of simplicity

Instantaneous key recognition & ease of operation, the result of careful attention to design details

More comfortable in the hand!

A rounded design that fits naturally in the hand & a slim toàn thân that’s comfortable lớn hold

Attachable và detachable in any direction!

Hard case that’s attachable and detachable in any direction for greater ease of use

More legible!

The keys have been made rectangular, making them easier lớn press. They are also easier to read because of larger text.

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Easier khổng lồ use!

Highly visible, easy-to-press cursor keys & function keys

The photo shows the fx-991ES PLUS 2nd edition.

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2 unique Authentic quality

Excellent unique and authentication ensure confidence & peace of mind for use in tamquocquananh.vncational settings

1Tough & Sustainable

tamquocquananh.vn has established three criteria khổng lồ ensure excellent unique in the ES PLUS series.

1.Wear-resistant printing

2,000-cycle wear testing

Since ES PLUS calculators are products used for many years as learning tools, the keys are made of a material that offers high durability và resistance to lớn print peeling.

2.Drop-resistant body

Drop testing from a height of 75 cm

The high product unique prevents malfunction or breakage when a calculator is dropped.

3.Environmentally friendly

Compliant with RoHS environmental regulations

The materials used in ES PLUS series calculators comply with European RoHS environmental regulations, an international standard.

*Complies with DEHP, BBP, DBP, và DIBP

These three unique features ensure that tamquocquananh.vn ES PLUS series calculators are tamquocquananh.vncational tools that effectively support learning.

2Authenticity Check

Two methods enable authenticity checking before & after purchase.Furthermore, Premium nội dung is available to registered users of genuine ES PLUS series calculators.

Web Authenticity kiểm tra System

There are two website Authenticity kiểm tra methods. Confirm hàng hóa authenticity by using a điện thoại thông minh to scan a QR code attached to the sản phẩm package or shown on the calculator display.

Before purchase

Check on the calculator packaging


A hologram sticker is affixed khổng lồ the package.Please confirm the sticker.

The photo shows the fx-991ES PLUS 2nd edition.

Note: The example shown is a simulated QR Code.


Read the QR Code section of the hologram sticker affixed khổng lồ the package with your smartphone.


Go lớn the QR Code link. One of the three pages below will appear.

Likely to lớn be a genuine product.

May not be a genuine product.

Not a genuine product. Please vì not purchase.

Note: The web Authenticity check estimates the authenticity of the hologram sticker based on QR Code read status trends. This kiểm tra does not necessarily guarantee the product is genuine.

Hologram sticker

A QR Code và sticker printed with a hologram as shown below are affixed khổng lồ the hàng hóa package.

The hologram has an iridescent rainbow color section & a shiny white section, và the tamquocquananh.vn logo is visible.

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Note: This differs from the actual colors because color shades vary depending on the direction of the light. The hologram sticker has the following characteristics that make it difficult to lớn copy.

When the sticker is tilted to the left and right, the màu sắc changes. When the sticker is rotated, the shading is reversed.

Note: A hologram sticker is affixed in limited countries.

Use the above characteristics khổng lồ authenticate a product.

After purchase

Check on the hàng hóa display


From the mode selection screen, press the 0 key to lớn display a QR code on the calculator display.

The photo shows the fx-991ES PLUS 2nd edition.

Note: The example shown is a simulated QR Code.


Scan the QR code with a điện thoại thông minh to go to lớn the linked webpage.


Choose Authenticity check or User"s Guide.

Authenticity Check

Go lớn the QR Code link. One of the two pages below will appear.

Likely to be a genuine product.

Not a genuine product.Please bởi vì not purchase.

User"s guide

Go to lớn the User’s Guide Page on website.

“QR code” is a registered trademark of Denso Wave Incorporated in nhật bản and other countries

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3 Function Natural Textbook Display

Features Natural Textbook Display format for displaying equations and calculation results just as they appear in textbooks

Fraction và square root



Statistical calculations

Equation calculations

Complex number calculations

Matrix calculations

Vector calculations

SOLVE calculations

CALC calculations

Integration calculations

Differential calculations

Scientific constants

Metric conversions

Natural Textbook Display models that make it easy to teach và easy khổng lồ learn!

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4 Premium nội dung A variety of original tamquocquananh.vn nội dung is available to lớn make learning mathematics fun.

Users can access this content by registering after the authentication check.

1Math Game

Become familiar with mathematics while playing a fun game.

Available languages:English, Thai, Indonesian

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Enjoy an original manga linked lớn the math game.

Available languages:English, Thai, Indonesian

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3Certificate of Authenticity

Download the e-certificate of authenticity with your name and unique identifier code.

Available languages:English, Thai, Indonesian, Bengali, Traditional Chinese, Spanish, Portuguese, Arabic

4Mock Exam Papers và Exam Preparation Booklet

These books use the fx-991EX when illustrating how to lớn use the calculators.

Mock Exam Papers :The booklet contains mock exams & tips for use in class.

Available in Pakistan only *

Exam Preparation Booklet :Commentary and answers

Available in Bangladesh only *