Description
Make mathematical ideas easier to explore with the Casio fx-991CW ClassWiz scientific calculator. Its natural textbook display and app-based navigation help students work through calculations with confidence.
See expressions clearly
Fractions, powers, roots and other expressions appear in a familiar textbook format on a high-resolution screen. Four display gradations highlight the current input position, while intuitive cursor controls and an icon-based Home menu help you move between tasks.
Tools for learning
Choose an app for calculations, statistics or tables. Math Box simulates dice rolls and coin tosses for probability lessons. CATALOG groups commands for the active app; FUNCTION memory stores supported functions, and VARIABLE displays and recalls stored values.
Advanced calculations
Use applications for matrices, vectors, complex numbers, simultaneous and polynomial equations, inequalities, ratios and spreadsheets. Numerical differentiation and integration, statistical distributions, base-N calculations, scientific constants and metric conversions support more advanced work.
Explore results with QR codes
Generate a QR code for a supported result and scan it with a compatible smartphone or tablet to access Casio’s online visualisation service. Internet access is required. The calculator itself is non-graphing and non-programmable.
Specifications
- Model: Casio fx-991CW, ClassWiz CW series
- Natural Textbook Display: 10 + 2 digits, four gradations
- Power: solar and battery
- Size (D × W × H): 162 × 77 × 10.7 mm; weight approximately 95 g
- Hard case included
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Updated 28 October 2026
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