Casio Scientific Calculator FX-991 ES PLUS 2nd Edition Portable Non-Programmable FX991 FX 991

Casio Scientific Calculator FX-991 ES PLUS 2nd Edition Portable Non-Programmable FX991 FX 991

1 Review 5 1 Review

Casio Scientific Calculator FX-991 ES PLUS 2nd Edition Portable Non-Programmable

Simple and easy to use
Optimal education tools realized through s design that emphasizes comfort in the hand, legibility, and usability through the pursuit of simplicity

Natural Textbook Display
Features Natural Textbook Display format for displaying equations and calculation result just as they appear in textbooks

Authentic quality
Excellent quality and authentication ensure confidence and peace of mind for use in educational settings


  • New equation mode
  • Random integers
  • Fraction calculations
  • Combination and permutation
  • Statistics (List-based STAT data editor, standard deviation, regression analysis)
  • 9 variables
  • Table function
  • Comes with new slide-on hard case
  • Equation calculations
  • Integration/differential calculations
  • Matrix calculations
  • Vector calculations
  • Complex number calculations
  • CALC function
  • SOLVE function
  • Base-n calculation



  • Number of Functions : 417
  • Natural textbook display. Display expression same as textbook.
  • Digit. 10-digit mantissa + 2-digit exponential display.
  • Dot matrix display. High-resolution screen provides beautiful looking graphs every time.
  • Multi-replay. Quick and easy recall of previously executed formulas for editing and re-execution.
  • Solar & Battery. Solar powered when light is sufficient, battery powered when light is insufficient.
  • Plastic keys. Designed and engineered for easy operation.
  • Basic Statistics. Standard statistics functions such as Mean, SUM, Standard Deviation, and Regression
  • Table Generation. You can create a numerical table based on that expression by registering a function expression. In addition, graph functions can be represented by graphs.
  • Base-n calculation. Binary/Octal/Hexadecimal
  • Scientific Constants. You can use constant symbols used in physics, science classes.

Basic Mathematical Functions:

  • Trigonometric, Exponential logarithmic, etc.
  • Differentiation
  • Non Graphing
  • Matrix
  • Equation
  • Integration
  • Vector
  • Complex number calculation
GTIN: 4549526609039

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  • Great calculator with everything it has. Only missing the plastic package, otherwise great product

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