fx-991CW - Casio Calculators

fx-991CW advanced scientific calculator

Our advanced scientific calculator, the UK’s best selling, been upgraded to the latest ClassWiz technology.

It features a brand-new interface with scrolling menus, all mathematical functions available in a single key and a new crystal-clear display.

You’ll really appreciate:
• natural maths display
• advanced maths functions
• scrolling menu navigation
• simplified keys with main functions
• easy-to-use number formatting
• 4-tone input display with a new font
• keys that work pressed at any angle
• the clip-on cover

You get all the basic maths functions and more. For GCSE there’s the basics plus equation and inequality solvers. For A-level there’s probability distributions. For Further Maths there’s complex numbers, matrices and vectors.

Interested in going graphic? Check out the fx-CG50.

Our advanced scientific calculator with solar power comes with additional functions for solving equations and inequalities; calculating probability distributions; complex, vector and matrix arithmetic; base arithmetic and conversion; and a spreadsheet.

The new interface features scrolling menus, all mathematical functions available in a single catalogue key and number formats available in a format key. The new display has a new font and 4-tone input for extra clarity.

Suitable for all levels up to A-level (including Further Maths) and for professional work.

CALCULATION: arithmetic, trigonometry, logarithms, exponential, hyperbolic, equivalent ratio, complex number, vectors, matrices, base-n

STATISTICS: mean, standard deviation, quartiles, regression

SOLVER: simultaneous linear, polynomial, non-linear, inequalities

FUNCTIONS: table of values (2 functions),

PROBABILITY: Normal, inverse Normal, Binomial, Poisson

SPREADSHEET

SIMULATION: dice roll, coin toss

POWER: Solar panel, battery backup

Skills Resources for New fx-991CW

The intended audience and use for these videos are those outlined in the JMC report on Maths technology:

ClassWiz: Navigating the calculator
fx-83GTCW,fx-85GTCW,fx-991CWA-LevelGCSEIreland JC & LC

How to use navigation keys, and the Catalog and Tools keys….

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ClassWiz: How to reset your calculator
fx-83GTCW,fx-85GTCW,fx-991CWA-LevelGCSEIreland JC & LC

How to reset the calculator, with options for resetting variable memory or not….

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ClassWiz: Calculations with basic fractions and recurring decimals
fx-83GTCW,fx-85GTCWGCSEIreland JC & LC

How to calculate fractions and recurring decimals, and change the answer format …

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ClassWiz: Using memory in calculations
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How to store answers and values in memory, and use memory in calculations….

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ClassWiz: Number display preferences
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How to set your preferred number display for fractions and decimals, including s…

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ClassWiz: Calculations in standard form
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How to calculate using standard form….

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ClassWiz: Authenticity check and user guide
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How to check your ClassWiz calculator is a genuine Casio, and how to get help an…

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ClassWiz: Calculations with advanced fractions
fx-83GTCW,fx-85GTCW,fx-991CWA-LevelGCSEIreland JC & LC

How to calculate more advanced fractions including calculations within a fractio…

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ClassWiz: How to create a table of values
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How to create a table of values for plotting a graph. We plot y=2x+1 and also sh…

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ClassWiz: Advanced Functions – fx-991CW
fx-991CWA-LevelGCSEIreland JC & LC

ClassWiz: Maths Functions – fx-991CW What’s changed? Advanced Functions…

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ClassWiz: Calculating statistics from a list or frequency table
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How to calculate the gradient, y-intercept and correlation coefficient of a line…

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ClassWiz: Calculating linear regression
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In this video we will look at how to calculate the value of the first derivative…

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ClassPad emulator

Teachers can request a free licence for use in classrooms, remote and blended learning (available in the UK, Channel Islands, Isle of Man and Ireland). 

The free licence lasts for 1 year for demonstrating the calculator and preparing activities and is an ideal tool to embed mathematical understanding

ClassWiz: Evaluating powers and roots
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How to calculate powers and roots of any number The video is relevant for the fx…

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ClassWiz: Calculating HCF and LCM
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How to find the product of prime factors of a number, and the highest common fac…

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ClassWiz: Evaluating derivatives and definite integrals
fx-991CWGCSE

How to calculate the value of the first derivative and definite integral of a fu…

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ClassWiz: Solving simultaneous linear equations
fx-991CWGCSE

How to calculate the gradient, y-intercept and correlation coefficient of a line…

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ClassWiz: Matrices basic arithmetic
fx-991CWGCSE

In this video we will look at how to define, add and multiply matrices. The vide…

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ClassWiz: Matrices basic arithmetic
fx-991CWGCSE

In this video we will look at how to define, add and multiply matrices. The vide…

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ClassWiz: Vectors: Advanced calculations
fx-991CWGCSE

How to calculate the scalar (dot) product, vector (cross) product and scalar tri…

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ClassWiz: Matrices Further operations
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In this video we will look at how to define vectors, and calculate a scalar mult…

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ClassWiz: Matrices Determinant and inverse
fx-991CWGCSE

How to calculate the determinant and inverse of a matrix We also cover finding t…

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ClassWiz: Solving equations
fx-991CWGCSE

In this video we will look at how to solve linear and non-linear equations using…

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ClassWiz: How to evaluate exponents and logarithms
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In this video we will look at how to evaluate exponents and logarithms to differ…

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ClassWiz: How to generate random numbers
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In this video we will look at how to generate random integers between a start an…

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Casio fx-991CW calculator

Resources to help you explore the ClassWiz range

We recently had the chance to work with Joely as she developed five teaching resources dedicated to the new ClassWiz scientific calculator range.

Casio ClassWiz calculator, student and teacher

Teachers and students share their views on new ClassWiz calculators

It’s important to us to stay up to date with how developments in our devices are being received by the people who use them every day.

Casio ClassWiz

How scientific calculators can boost classroom engagement

Calculators will never be a substitute for good teaching or effective learning, but they do offer huge potential to strengthen understanding, unlock new approaches to problems and build confidence.

ClassWiz: Probability simulation with coins
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In this video we will look at how to use coin flips to simulate probability outc…

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ClassWiz: How to solve polynomial equations
fx-991CWGCSE

In this video we will look at how to find the solutions to polynomial equations …

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ClassWiz: Basic calculations on the fx-991CW
fx-991CW

In this video we will look at how to make calculations and format numbers on the…

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ClassWiz: Probability simulation with dice
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In this video we will look at how to use dice rolls to simulate probability outc…

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ClassWiz: Displaying charts using the Statistics app
fx-83GTCW,fx-85GTCW,fx-991CWGCSE

In this video we will look at how to display charts in Classpad.net using the St…

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ClassWiz: Displaying graphs using the Table app
fx-83GTCW,fx-85GTCW,fx-991CWGCSE

In this video we will look at how to display charts in Classpad.net using the St…

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fx-991CW transition videos

A selection of transition videos designed to help make the switch from the fx-991EX model to the new fx-991CW.

New ClassWiz: key changes – fx-991CW
fx-991CWA-LevelGCSEIreland JC & LC

New ClassWiz: key changes – fx-991CW What’s changed? Apps, Navigation and Set…

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New ClassWiz: Maths Functions – fx-991CW
fx-991CWA-LevelGCSE

New ClassWiz: Maths Functions – fx-991CW What’s changed? Maths Functions…

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New ClassWiz: Number and Calculations – fx-991CW
fx-991CWA-LevelGCSEIreland JC & LC

New ClassWiz: Number and Calculations – fx-991CW What’s changed? Number and C…

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Register for your Calculator policy

To help you communicate calculator use in your school, we have developed some calculator policy templates for you to share with students and parents.

Examinations

The fx-991CW is permitted in GCSE & National 5 and A-level & Highers exams.

FAQs

How can we help? Visit our FAQ page to find out more about our calculators.

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Casio Education offer special school pricing on our scientific and graphic calculators.