Casio Standard Scientific Calculators fx-991EX-PK


Available on backorder

MFR SKU: 4549526611339
Categories: ,

  • Brand:Casio
  • Natural Textbook Display
  • Intuitive, easy-to-learn icon display

QAR 89

Available on backorder

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Product TypeNon Programmable

Non Graphing

Number Of Digits10+2 Digits
Liquid Crystal Display3-digit comma markers

Natural textbook display

Icon menu

Dot matrix display

High Resolution


Key CharacteristicsPlastic Keys
Key FunctionsNegative Sign

Power Off

MemoryVariables: 9

Independent Memory (M / M+ / M-)

Answer Memory

Memory Protection

Reset Function

Power SupplySolar & Battery

Approximate battery life Main 2 years

Auto Power Off


Statistical CalculationsStatistics Function

Basic Statistics

Intermediate Statistics

Advanced Statistics

Distribution Calculations

Statistical Data List Based Stat-Data Editor
Display Format SettingsNumber Format: Fix

Number Format: Sci

Number Format: Norm

Engineering Notation

Toggling Calculation Results

Basic CalculationsBasic Calculation

Bracket Calculation

Fraction Calculation

Degree, Minute, Secound (Sexagesimal) Calculations

Reciprocal Calculation

Percent Calculation (scientific calculator function)

Ratio calculation

Factorial Function


Calculation with √ and π

Rounding Function


Applied CalculationsMulti-statement Command (:)

Continuous Calculation

Replay Function

Multi-replay Function


CALC Function

SOLVE Function

Basic FunctionsBasic Mathematical Functions

Number of Functions : 552

Independent Key x

Absolute Value Calculation

Power Function (Square)

Power Function (Cube)

Power Function

Power Function (Square Root)

Trigonometric Function

Inverse Trigonometric Function

Hyperbolic / Inverse Hyperbolic Function

Exponential Calculation

Logarithmic Calculation

Log not base 10

Coordinate Conversion

Combination / Permutation

Prime Factorization

Random Number Generation

Random Integer Generation


Intuitive, easy-to-learn icon display

The use of icons on the menu screen improves viewability. Selection of the desired function is quick and easy.

Natural Textbook Display

Input and display fractions, powers, logarithms, roots, and other mathematical formulas and symbols just as they appear in textbooks.

List display function for thorough, speedy learning

Variables and statistical calculation results stored in memory can be displayed in lists. There’s no need to recall and confirm individual values as with previous models.

High computational competence for performing even advanced mathematics

ClassWiz contains calculation functions that support even advanced mathematical operations, including spreadsheet calculations, 4 × 4 matrix calculations, calculation of simultaneous equations with four unknowns and quartic equations, and advanced statistical distribution calculations.

Online Visualization Service Using QR Code

Generate QR codes of equations input into the calculator by a simple operation. Graphs and other graphics can be displayed on smartphone or tablet screens.


SKU: FX-991EX-PK-W Categories: ,


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