Casio Fx-991cw Scientific calculator

High-Resolution Natural Textbook Display
Displays formulas and results exactly as written in textbooks, making calculations easier to understand and reducing mistakes.

Icon-Based Menu with Cursor Navigation
Modern ClassWiz interface allows quick access to functions and smooth movement through calculations using directional keys.

High-Definition 4-Gradation LCD Screen
Improved contrast and shading make numbers, symbols, and menus clearer than older calculator models.

Very Fast Calculation Speed
Upgraded processing delivers quick responses, ideal for exams and classroom use where time matters.

Spreadsheet Function Mode
Enables table-style calculations and data handling for statistics, learning, and basic data analysis.

Advanced Equation & Polynomial Solver
Solves simultaneous equations, quadratic and higher-order polynomials with ease.

Statistics & Regression Functions
Supports a wide range of statistical calculations, including regression analysis for academic work.

Table & Function Analysis Tools
Generates value tables from one or two functions to support deeper understanding of math concepts.

QR Code Output for Graph Visualization
Converts equations and tables into QR codes that can be viewed as graphs on a smartphone or tablet.

Dual Power System (Solar + Battery)
Ensures reliable operation in both bright and low-light conditions.

Non-Programmable & Exam-Friendly
Accepted in most schools and examination boards as it does not support programming or data storage misuse.

Wide Function Coverage (540+ Functions)
Covers algebra, trigonometry, calculus, statistics, matrices, vectors, base-n calculations, inequalities, and more.