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Casio Fx 991ex Classwiz Scientific Calculator Comparison - July 2025

7 Best Casio Fx 991ex Classwiz Scientific Calculator In the UK

1
Best Choice
9.7Exceptional
2
9.5Excellent
3
Best Value
9.2Excellent
4
9.1Excellent
5
9.0Excellent
6
8.9Very Good
7
8.8Very Good
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Model

CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black
Model
Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural
Model
Casio fx-991CW Advanced Scientific Calculator (UK Version)
Model
FX-991CW Advanced Scientific Calculator
Model
(Spanish Version) Casio FX-991ES Plus-2nd Edition Scientific Calculator
Model
Casio FX-991 CW (Italian Model) Scientific Calculator, 540 Functions and Natural Display
Model
CLIUNT FX-991EX Scientific Calculator, Engineering Scientific Calculator With 552 Functions, Lcd Display Scientific Calculators for School Students

Brand

Casio
Brand
Casio
Brand
Casio
Brand
Casio
Brand
CASIO
Brand
Casio
Brand
CLIUNT

Reviews

29,526 reviews
Reviews
5,592 reviews
Reviews
29,562 reviews
Reviews
2,016 reviews
Reviews
25,635 reviews
Reviews
1,026 reviews
Reviews
48 reviews

Features

Worth the money

9.3
Worth the money
9.1
Worth the money
9.3
Worth the money
9.1
Worth the money
8.9
Worth the money
8.6
Worth the money
8.6

Simple to use

9.6
Simple to use
9.8
Simple to use
9.6
Simple to use
9.3
Simple to use
9.1
Simple to use
9.1
Simple to use
8.9

Battery duration

9.6
Battery duration
9.9
Battery duration
9.6
Battery duration
9.3
Battery duration
9.1
Battery duration
9.1
Battery duration
8.9

Tech Specs

product dimensions

16.8 x 8.2 x 1.8 cm 90.01 g
product dimensions
16.2 x 7.7 x 1.1 cm 95 g
product dimensions
16.2 x 7.7 x 1.1 cm 150 g
product dimensions
7.7 x 16.21 x 1.07 cm 94.97 g
product dimensions
16.2 x 7.7 x 1.1 cm 95 g
product dimensions
16.2 x 7.7 x 1.07 cm 95 g
product dimensions
16.5 x 8 x 0.1 cm 160 g

batteries

1 CR123A batteries required. included
batteries
1 A batteries required. included
batteries
1 LR44 batteries required.
batteries
1 LR44 batteries required. included
batteries
1 LR44 batteries required. included
batteries
1 LR44 batteries required. included
batteries
1 CR2 batteries required.

item weight

89.9 g
item weight
-
item weight
150 g
item weight
-
item weight
95 g
item weight
-
item weight
-

number of items

1
number of items
-
number of items
1
number of items
-
number of items
1
number of items
-
number of items
-

manufacturer part number

FX-991EX
manufacturer part number
-
manufacturer part number
FX-991CW-W-UT
manufacturer part number
-
manufacturer part number
C79
manufacturer part number
-
manufacturer part number
-

customer reviews

4.7 4.7 out of 5 stars 9, 842 ratings 4.7 out of 5 stars
customer reviews
-
customer reviews
4.7 4.7 out of 5 stars 9, 854 ratings 4.7 out of 5 stars
customer reviews
-
customer reviews
4.5 4.5 out of 5 stars 8, 545 ratings 4.5 out of 5 stars
customer reviews
-
customer reviews
-

color

Black
color
-
color
black
color
-
color
Black
color
-
color
-

Available On

Available On
Available On
Available On
Available On
Available On
Available On

Our Top 3 Picks

Here are the top 3 recommended products with more information to help you find the right product for you
  • 9.7
    1
    Casio
    72% Off

    CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK VERSION), Black

    9.6 Simple to use
    9.6 Battery Duration
    9.3 worth the money

    Why we love it

    Extensive mathematical functions.
    Ideal for advanced educational use.
    Clear and intuitive display.
  • 9.5
    2
    Casio

    Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural

    9.9 Battery Duration
    9.8 Simple to use
    9.1 worth the money

    Why we love it

    Easy-to-read natural display.
    Dual power for reliability.
    Versatile for various calculations.
  • 9.2
    3
    Casio
    41% Off

    Casio fx-991CW Advanced Scientific Calculator (UK Version)

    9.6 Simple to use
    9.6 Battery Duration
    9.3 worth the money

    Why we love it

    Widely approved for UK exams.
    Dual power ensures reliability.
    Advanced functions for higher education.

Our ranking system

The TopChoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. TopChoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.

Features

Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
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Consumer Reviews

We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
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Popularity

Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
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Value for money

TopChoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.

When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.