Casio fx-991ES Plus Scientific Calculator - 417 Functions - 15 Character(s) - Dot Matrix - Battery, Solar Powered - 6.4" x 3.1" x 0.4"

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Product Model:
fx-991ES Plus
Shipping Weight:
Manufactured by:
Casio Computer Co., Ltd
Please Call for ETA or Place Backorder
Genuine and factory sealed in box.
Valid for Canada only.
  • $31.99 CAD Regular Price:
  • $4.00 CAD You Save:
$27.99 CAD

Marketing Information

This top of the range scientific calculator presents 403 mathematical functions on its exceptionally clear and easy-to-read Natural Textbook Display. This ever popular model is now available with Random Integers and an improved equation mode, as well as solar power.

General Information

Product Type Scientific Calculator
Manufacturer Part Number FX-991ESPLUS
Manufacturer Website Address
Manufacturer Casio Computer Co., Ltd
Product Model fx-991ES Plus
Product Name fx-991ES Plus Scientific Calculator
Brand Name Casio

Technical Information

Number of Functions 417
  • Fraction Input Mode
  • Improved Equation Mode
  • Random Integer
  • Repeat Function
  • 24 Levels of Bracket
  • Variable Memories
  • Percentage
  • Exponential
  • Logarithmic
  • Power/Root
  • Inverse
  • Logical Calculation
  • Complex Numbers Calculation (a+bi /r??)
  • Parentheses
  • Output in ? -form
  • Output in ?-form


  • Trigonometric/Inverse Trigonometric
  • Hyperbolic/Inverse Hyperbolic
  • Combinatoric/Permutation
  • Random Number Generator
  • Polar & Rectangular Coordinates Conversion
  • Calculates with Fractions (two modes)
  • Sexagesimal & Decimal Conversion
  • Gradian, Degree & Radian Calculation


  • Lists of Based Statistic
  • Variable Statistic
  • Standard Deviation
  • Linear
  • Quadratic
  • Solve/Calc
  • Numeric Integration
  • Numeric Differentiation
  • ?()-


  • Linear System
  • Polynomial


  • Determinant
  • Inverse Matrix


  • Internal/ External Product
  • Physical Constant
  • Metric Conversion

Display & Graphics

Display Screen 15 Character - Dot Matrix

Battery Information

Power Source Battery

Physical Characteristics

Weight (Approximate) 95.0 g
Height 6.4"
Width 3.1"
Depth 0.4"


This product is shipped only within Canada and Warranty valid for Canada only.

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