View the manual for the Casio FX-991ES Plus here, for free. This manual comes under the category Calculators and has been rated by 13 people with an average of a 8.8. This manual is available in the following languages: English. Do you have a question about the Casio FX-991ES Plus or do you need help? Ask your question here

- Important Information
- Sample Operations
- Initializing the Calculator
- Safety Precautions
- Handling Precautions
- Removing the Hard Case
- Turning Power On and Off
- Adjusting Display Contrast
- Key Markings
- Reading the Display
- Using Menus
- Specifying the Calculation Mode
- Configuring the Calculator Setup
- Inputting Expressions and Values
- Toggling Calculation Results
- Basic Calculations
- Function Calculations
- Complex Number Calculations (CMPLX)
- Using CALC
- Using SOLVE
- Statistical Calculations (STAT)
- Base-n Calculations (BASE-N)
- Equation Calculations (EQN)
- Matrix Calculations (MATRIX)
- Creating a Number Table from a Function (TABLE)
- Vector Calculations (VECTOR)
- Scientific Constants
- Metric Conversion
- Calculation Ranges, Number of Digits,and Precision
- Errors
- Before Assuming Malfunction of the Calculator...
- Replacing the Battery
- Specifications
- Frequently Asked Questions

Casio | |

FX-991ES Plus | FX-991ES PLUS | |

Calculator | |

4971850134855, 4971850167037, 4971850090359 | |

English | |

Manual (PDF) |

Form factor | Desktop |

Type | Scientific |

Product colour | Grey |

Cover | ✗ |

Control type | Buttons |

Digits | 15 digits |

Display tilting | ✗ |

Backlight display | ✗ |

Display number of lines | 10 lines |

Second display | ✗ |

Display type | Dot-matrix |

Display resolution | 96 x 31 pixels |

Storage media type | Not available |

Power source | Battery/Solar |

Battery type | LR44 |

Number of batteries supported | 1 |

Battery life | 3 year(s) |

Width | 80 mm |

Depth | 162 mm |

Height | 11.1 mm |

Weight | 95 g |

Symbolic notation | Square root |

Conversion between | Decimal, Fraction, Percent |

Random number/integer generator | ✓ |

Convert angles from degrees to | Gradian, Radian |

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Casio FX-991ES Plus below.

What is an Overflow error?

A battery in my Calculator has started to corrode. Is the device still safe to use?

What does AC stand for on my calculator?

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