Casio FX-991ES Plus 2nd Edition Scientific Calculator – 417 Functions Natural Textbook Display
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Description
Write It Like a Textbook. Calculate Like a Pro.
The world's best-selling scientific calculator — 417 functions, natural textbook display, and trusted by millions of students and professionals worldwide.
Key Highlights
📐 417 Mathematical Functions — Comprehensive function set covering all secondary and university mathematics
📺 Natural Textbook Display — Shows equations and results exactly as they appear in textbooks
✏️ Natural VPAM Input — Enter expressions naturally with fractions, roots, and powers as written
🔢 Dual Display — Shows both the entered expression and calculated result simultaneously
📊 Statistics & Regression — Full statistical functions including multiple regression analysis
🔢 Matrix & Vector Calculations — Handles matrix operations up to 3×3 and vector arithmetic
☀️ Dual Solar + Battery Power — Reliable in all lighting conditions
🏫 Exam Board Approved — Approved for NEB, IOE, and major international examinations
The Casio FX-991ES Plus 2nd Edition Scientific Calculator is the world's most popular scientific calculator — trusted by tens of millions of students, engineers, and professionals across the globe for its unmatched combination of comprehensive mathematical functions, natural textbook display, and bulletproof everyday reliability.
The Natural Textbook Display (Natural VPAM) is the feature that made the FX-991ES series famous and set the standard for all scientific calculators that followed. Mathematical expressions appear on screen exactly as they would be written in a textbook or exam paper — fractions display as true stacked numerator/denominator form, square roots show beneath the radical symbol, integrals appear with proper mathematical notation, and powers display as superscripts. This natural display dramatically reduces the mental translation required between what you write and what the calculator shows, minimizing entry errors and making result checking intuitive.
The 417 functions cover the complete scope of mathematical topics encountered from secondary school through university level — basic arithmetic, fractions and decimals, powers and roots, trigonometry (degrees, radians, gradians), logarithms, complex number arithmetic, matrix calculations up to 3×3, vector operations, statistical analysis, regression, equation solving (quadratic and cubic), calculus (numerical integration and differentiation), and more.
The 2nd Edition refinement brings improved operation speed, enhanced display contrast, and refined button feel compared to the original FX-991ES Plus — while maintaining full function compatibility and the same trusted calculation engine.
The dual display shows your input expression on the top line and the calculated result below — allowing you to verify exactly what you entered before accepting the result. The replay function lets you scroll back through previous calculations and edit them rather than retyping from scratch.
For statistics work, the FX-991ES Plus handles single and paired variable data, frequency distributions, and regression analysis across multiple models (linear, quadratic, logarithmic, exponential, power, inverse). For equation solving, it handles simultaneous equations up to 3 variables and polynomial equations up to cubic — covering the full range of algebraic problem types in the NEB curriculum.
Dual solar and battery power ensures the calculator works through every exam, every study session, and every site visit regardless of light levels.
Approved for use in NEB, IOE, CTEVT, TU, and all major international examination boards — the FX-991ES Plus 2nd Edition is the single most recommended scientific calculator for Nepali students from Grade 11 through engineering degree level.
Specifications
Feature | Details |
|---|---|
Brand | Casio |
Model | FX-991ES Plus 2nd Edition |
Type | Non-Programmable Scientific Calculator |
Total Functions | 417 |
Display Type | Natural Textbook Display (Natural VPAM) |
Display Lines | 2 (Expression + Result) |
Matrix Calculations | Yes (Up to 3×3) |
Vector Calculations | Yes |
Complex Numbers | Yes |
Equation Solver | Yes (Simultaneous up to 3 variables, Polynomial up to cubic) |
Integration / Differentiation | Yes (Numerical) |
Statistics | Yes (Full regression analysis) |
Replay Function | Yes |
Power Source | Dual Solar + Battery |
Exam Approval | NEB, IOE, International Boards |
Color | Black |
Warranty | 1 Year Casio Warranty |
What's in the Box
Casio FX-991ES Plus 2nd Edition Calculator × 1
Slide-On Hard Case × 1
Battery (Pre-installed)
User Manual / Documentation
Ideal For
🎓 Grade 11 & 12 (NEB) Science Students
🏛️ IOE & Engineering Entrance Preparation
🔬 Physics, Chemistry & Mathematics Students
📐 Engineering & Architecture Students
📊 Statistics & Research Professionals
The Casio FX-991ES Plus 2nd Edition Scientific Calculator is the world's most popular scientific calculator — trusted by tens of millions of students, engineers, and professionals across the globe for its unmatched combination of comprehensive mathematical functions, natural textbook display, and bulletproof everyday reliability.
The Natural Textbook Display (Natural VPAM) is the feature that made the FX-991ES series famous and set the standard for all scientific calculators that followed. Mathematical expressions appear on screen exactly as they would be written in a textbook or exam paper — fractions display as true stacked numerator/denominator form, square roots show beneath the radical symbol, integrals appear with proper mathematical notation, and powers display as superscripts. This natural display dramatically reduces the mental translation required between what you write and what the calculator shows, minimizing entry errors and making result checking intuitive.
The 417 functions cover the complete scope of mathematical topics encountered from secondary school through university level — basic arithmetic, fractions and decimals, powers and roots, trigonometry (degrees, radians, gradians), logarithms, complex number arithmetic, matrix calculations up to 3×3, vector operations, statistical analysis, regression, equation solving (quadratic and cubic), calculus (numerical integration and differentiation), and more.
The 2nd Edition refinement brings improved operation speed, enhanced display contrast, and refined button feel compared to the original FX-991ES Plus — while maintaining full function compatibility and the same trusted calculation engine.
The dual display shows your input expression on the top line and the calculated result below — allowing you to verify exactly what you entered before accepting the result. The replay function lets you scroll back through previous calculations and edit them rather than retyping from scratch.
For statistics work, the FX-991ES Plus handles single and paired variable data, frequency distributions, and regression analysis across multiple models (linear, quadratic, logarithmic, exponential, power, inverse). For equation solving, it handles simultaneous equations up to 3 variables and polynomial equations up to cubic — covering the full range of algebraic problem types in the NEB curriculum.
Dual solar and battery power ensures the calculator works through every exam, every study session, and every site visit regardless of light levels.
Approved for use in NEB, IOE, CTEVT, TU, and all major international examination boards — the FX-991ES Plus 2nd Edition is the single most recommended scientific calculator for Nepali students from Grade 11 through engineering degree level.
Specifications
Feature | Details |
|---|---|
Brand | Casio |
Model | FX-991ES Plus 2nd Edition |
Type | Non-Programmable Scientific Calculator |
Total Functions | 417 |
Display Type | Natural Textbook Display (Natural VPAM) |
Display Lines | 2 (Expression + Result) |
Matrix Calculations | Yes (Up to 3×3) |
Vector Calculations | Yes |
Complex Numbers | Yes |
Equation Solver | Yes (Simultaneous up to 3 variables, Polynomial up to cubic) |
Integration / Differentiation | Yes (Numerical) |
Statistics | Yes (Full regression analysis) |
Replay Function | Yes |
Power Source | Dual Solar + Battery |
Exam Approval | NEB, IOE, International Boards |
Color | Black |
Warranty | 1 Year Casio Warranty |
What's in the Box
Casio FX-991ES Plus 2nd Edition Calculator × 1
Slide-On Hard Case × 1
Battery (Pre-installed)
User Manual / Documentation
Ideal For
🎓 Grade 11 & 12 (NEB) Science Students
🏛️ IOE & Engineering Entrance Preparation
🔬 Physics, Chemistry & Mathematics Students
📐 Engineering & Architecture Students
📊 Statistics & Research Professionals
