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:

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Navigating the calculator

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: How to reset your calculator

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW GCSE Ireland JC & LC
ClassWiz: Calculations with basic fractions and recurring decimals

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Using memory in calculations

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Number display preferences

How to set your preferred number display for fractions and decimals, including s…

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Calculations in standard form

How to calculate using standard form. …

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Authenticity check and user guide

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Calculations with advanced fractions

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: How to create a table of values

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

fx-991CW Casio calculator
Model Video
fx-991CW A-Level GCSE Ireland JC & LC
ClassWiz: Advanced Functions – fx-991CW

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW GCSE
ClassWiz: Calculating statistics from a list or frequency table

In this video we will look at how to calculate powers and roots of any number Th…

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Calculating linear regression

In this video we will look at how to calculate the value of the first derivative…

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW GCSE
ClassWiz: Evaluating powers and roots

In this video we will look at how to calculate the solution to linear simultaneo…

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW GCSE
ClassWiz: Calculating HCF and LCM

In this video we will look at how to create an identity matrix, store matrices a…

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Evaluating derivatives and definite integrals

In this video we will look at how to calculate the determinant and inverse of a …

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Solving simultaneous linear equations

In this video we will look at how to find the product of prime factors of a numb…

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Matrices basic arithmetic

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

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Matrices basic arithmetic

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

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Vectors: Advanced calculations

In this video we will look at how to calculate the gradient, y-intercept and cor…

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Matrices Further operations

In this video we will look at how to define vectors, and calculate a scalar mult…

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Matrices Determinant and inverse

In this video we will look at how to calculate the scalar (dot) product, vector …

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: Solving equations

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

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: How to evaluate exponents and logarithms

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW GCSE
ClassWiz: How to generate random numbers

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

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.

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW GCSE
ClassWiz: Probability simulation with coins

In this video we will look at how to use coin flips to simulate probability outc…

fx-991CW Casio calculator
How to Video
fx-991CW GCSE
ClassWiz: How to solve polynomial equations

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

fx-991CW Casio calculator
How to Video
fx-991CW
ClassWiz: Basic calculations on the fx-991CW

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW GCSE
ClassWiz: Probability simulation with dice

In this video we will look at how to use dice rolls to simulate probability outc…

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW GCSE
ClassWiz: Displaying charts using the Statistics app

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

fx-85GT CW Casio Calculator
How to Video
fx-83GTCW, fx-85GTCW, fx-991CW GCSE
ClassWiz: Displaying graphs using the Table app

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

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.

fx-991CW Casio calculator
Model Video
fx-991CW A-Level GCSE Ireland JC & LC
New ClassWiz: key changes – fx-991CW

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

fx-991CW Casio calculator
Model Video
fx-991CW A-Level GCSE
New ClassWiz: Maths Functions – fx-991CW

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

fx-991CW Casio calculator
Model Video
fx-991CW A-Level GCSE Ireland JC & LC
New ClassWiz: Number and Calculations – fx-991CW

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

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.

Looking To Stock The Classroom?

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