Casio Fx991 Es Plus Scientific Calculator

Original Casio calculator

You can check it using QR code

Press "ON" to power, and then "MODE", "0" to display the QR code on the calculator.

Basic calculation

Basic Calculation

Bracket Calculation

Fraction Calculation

Degree, Minute, Secound (Sexagesimal) Calculations

Reciprocal Calculation

Percent Calculation (scientific calculator function)

Factorial Function

π

Calculation with √ and π

Rounding Function

Advanced calculation

Transcendental number: e

Base-n calculation

Logical Operators

Complex number calculation

Matrix calculations

Vector calculations

Differential calculation

Integration calculation

Applied calculation

Multi-statement Command (:)

Continuous Calculation

Replay Function

Multi-replay Function

CALC Function

SOLVE Function

Statistical data

List based STAT-data editor

Statistical calculation

Statistics Function

Basic Statistics