The Casio fx-991ES PLUS 2nd Edition is a high-performance scientific calculator designed for precision and ease of use. With 417 built-in functions, this calculator is perfect for school, college, university, and professional applications in science, engineering, and mathematics.
It features Casio’s Natural Textbook Display (Natural-V.P.A.M.), which shows fractions, roots, exponents, and other mathematical expressions exactly as they appear in textbooks, making it easier to learn and verify results.
Powered by dual power (solar + battery), the fx-991ES PLUS ensures long-lasting performance without interruption. Its intuitive keypad layout, durable keys, and advanced calculation modes make it a reliable choice for exams, research, and everyday problem-solving.
Highlights:
Natural Textbook Display for easy reading of complex expressions
417 scientific functions, including complex numbers, statistics, matrices, and equation solving
Dual power system (solar + battery)
High-resolution LCD for clear viewing
Durable, responsive keys with shift and alpha functions
