Casio FX991MSPLUS2 Engineering/Scientific Calculator : �鶹��.ca: Office Products

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Casio FX991MSPLUS2 Engineering/Scientific Calculator

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Brand	Casio
Colour	Gray
Calculator Type	Engineering/Scientific
Power source	battery
Screen size	2.52

About this item

Scientific calculator with 401 advanced functions. Solar and battery backup
Calculus: integration, differential calculations; vector & matrix
Engineering calculations with different bases; base-n calculations/ conversions DECT., hex., Oct., and binary
40 scientific constants and 40 metric conversions
Two -way power; slide -on hard case

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This item: Casio FX991MSPLUS2 Engineering/Scientific Calculator

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STAEDTLER 10-Piece Math Set with Metal Compass, 6" Ruler & Triangle Squares, 45° & 30/60° Set Squares, Alphabet Stencil - Measuring Tools

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Casio FX-991ESPLUS2 with Authenticity verification (FX-991ESPLSC2-S-CT)

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Technical Details

Brand	‎Casio
Manufacturer	‎Casio
Place of Business	‎Markham, ON L3R 3L3, CA
Model	‎FX991MSPLUS2
Model Name	‎FX 991MSPLUS2
Part Number	‎FX991MSPLUS2
Mounting Hardware	‎Calculator, casecover, manual
Number of Items	‎1
Display Technology	‎LCD
Standing screen display size	‎2.52
Display type	‎LCD
Power source type	‎battery
Batteries included	‎Yes
Batteries Required	‎Yes
Battery Cell Composition	‎Alkaline
Material Type	‎Plastic
Does it contain liquid?	‎No
Manufacturer	‎Casio
Item model number	‎FX991MSPLUS2
Product Dimensions	‎6.4 x 3 x 0.44 cm; 95.25 g
ASIN	‎B07SK3GDM8

Additional Information

Batteries	1 LR44 batteries required. (included)
Date First Available	May 1 2019
Customer Reviews	958 ratings 4.7 out of 5 stars
�鶹�� Rank	#1,488 in Electronics (See Top 100 in Electronics) #14 in Scientific Calculators

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Product description

Casio FX991MSPLUS2 scientific calculator. 2-Line display scientific calculator. Multi-replay function: backtrack step-by-step through calculations after you perform them. Equation solver, fraction calculations, permutation/combination, stat-data editor, solar Plus with Battery back-up, trigonometric functions, 1 independent Memory. Comes with slide-on hard case.

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User Manual (PDF)

Top Brand: Casio

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	This Item Casio FX991MSPLUS2 Engineering/Scientific Calculator	Recommendations Casio FX-991ES Plus-2 Scientific Calculator	�� Casio fx-991CW Advanced Scientific Calculator	�� Casio FX-991MS 2nd Gen Non-Programmable Scientific Calculator, 401 Functions and 2-line Display, Black	�� Casio FX82ESPLUSBK, Scientific Calculator, 252 Functions, Black	�� Casio fx-991ES Plus 2 Scientific Calculator with 417 Functions and Display, Natural
	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment	Try again! Details Added to Cart spCSRF_Treatment
Price	$15.33	-6%��$37.20 Was: $39.40	-14%��$29.99 List: $34.99	$36.70	$25.45	-14%��$34.40 Was: $39.99
Delivery	—	Get it by Tuesday, Aug 12	Get it by Thursday, Aug 14	Get it by Tuesday, Aug 12	Get it by Tuesday, Aug 12	Get it by Thursday, Aug 14
Customer ratings	4.7958	4.7266	4.51,463	4.44,404	4.47,586	4.72,609
Sold by	�鶹��.ca	DREAM FIELD Z	Karam Inc.	DREAM FIELD Z	PrimeSupplies	PrimeSupplies
model name	FX 991MSPLUS2	FX 991ES	FX-991CW	Scientific	FX-82ESPLUS-2-S4DT	fx-991ES Plus 2
power source	battery	Battery Powered	Battery Powered	Battery Powered	Battery Powered	Solar
battery quantity	1 lr44	1 lithium ion	1 lr44, 1 unknown	0 nonstandard battery	1 aaa	1 a, 1 aa
display type	LCD	LCD	LCD	LCD	LCD	LCD
material	Plastic	Plastic	Plastic	Plastic	Plastic	Plastic
style	—	—	—	2nd Gen	Scientific	Single

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Customer reviews

958 global ratings

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Customers say

Customers like the functionality, quality, and ease of use of the calculator. They mention it works wonders for all sorts of math, has a decent syntax for exponents, and is school-friendly. Customers also appreciate the appearance. However, some customers have reported issues with the button responsiveness.

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Functionality Quality Ease of use School-friendly Appearance Button responsiveness

49 customers mention "Functionality"49 positive0 negative

Customers like the functionality of the calculator. They mention it works wonders for all sorts of math, is very useful, and has all the functions mostly required for middle school. Customers also say it's a basic scientific calculator that can write many formulas.

"Great calculator! It's small, compact, and perfect for on-the-go use. It works just as expected. Very happy with my purchase!" Read more

"Works well" Read more

"This is a great calculator from a very reputable brand name... and at a great price!..." Read more

"Decent product. works well and my high school kid likes it" Read more

39 customers mention "Quality"33 positive6 negative

Customers are satisfied with the quality of the calculator. They mention it works well, is reliable, and durable. Some say it's good enough for high school students to do everything they need at that level.

"Good product" Read more

"Very good. My son has no complaints about it." Read more

"This calculator is of good quality and helped me survive through high school Physics and Advanced Functions...." Read more

"Good quality, a little confusing but once you know what you’re doing it works wonders for all sorts of math." Read more

20 customers mention "Ease of use"20 positive0 negative

Customers find the calculator easy to use. They mention the layout is easy to learn, the interface is great, and all scientific calculations are easily done. Customers also appreciate the decent syntax for exponents and order of operations.

"...It's easy to use, looks great, and performs all of the basic functions I need. The display is bright and clear, making it easy to read...." Read more

"...Dame layout with an upgraded look and feel. Very easy to use. I will say that it's predecessor is more ergonomic, but this isn't a problem at all...." Read more

"Easy to use as any other Casio, reliable and not expensive. Comes with a very didactid user manual." Read more

"Easy to read and price is great" Read more

13 customers mention "School-friendly"13 positive0 negative

Customers find the calculator to be school-friendly. They mention it's great for school, work, and home. Some say it's perfect for statistics and physics courses and approved for university math courses.

"Great for high school math classes, durable too. Have bought 2" Read more

"...Typical of Casio. Great for school, work and home" Read more

"Amazing product for students, but the ON button is a little pushed in compared to the others" Read more

"Good value for money. Suitable for students." Read more

3 customers mention "Appearance"3 positive0 negative

Customers like the appearance of the calculator. They mention it's easy to use and looks great.

"The second version of the original FX991MS. Dame layout with an upgraded look and feel. Very easy to use...." Read more

"...It's easy to use, looks great, and performs all of the basic functions I need. The display is bright and clear, making it easy to read...." Read more

"Does the job and still maintains a good look, sets apart from all the calculator I've had before." Read more

5 customers mention "Button responsiveness"0 positive5 negative

Customers are dissatisfied with the button responsiveness of the calculator. They mention the ON button is a little pushed in, the buttons don't work properly, and are sticky.

"Amazing product for students, but the ON button is a little pushed in compared to the others" Read more

"...Not sure if this is intended but mine came with the ON button depressed and slightly harder to turn on." Read more

"...me spilling corn syrup on thr #3 and #6 key it still works but buttons sticky" Read more

"...When I received it the button did not exist but it still does the job" Read more

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Top reviews from Canada

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Lauren
Good calculator
Reviewed in Canada on June 18, 2025
Verified Purchase

This calculator is of good quality and helped me survive through high school Physics and Advanced Functions. (Don't use this calculator for 12 U trig. It doesn't give answers in pi). Otherwise, it is great!

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Walker Bernard
Quality calculator, great for engineering.
Reviewed in Canada on June 26, 2025
Verified Purchase
Good quality, a little confusing but once you know what you’re doing it works wonders for all sorts of math.

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akess
Nice
Reviewed in Canada on November 17, 2020
Verified Purchase
The second version of the original FX991MS. Dame layout with an upgraded look and feel. Very easy to use. I will say that it's predecessor is more ergonomic, but this isn't a problem at all. Not sure if this is intended but mine came with the ON button depressed and slightly harder to turn on.

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�鶹�� Customer
Great calculator!
Reviewed in Canada on February 20, 2025
Verified Purchase
Great calculator! It's small, compact, and perfect for on-the-go use. It works just as expected. Very happy with my purchase!

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Angie Belmonte
Calculator
Reviewed in Canada on November 3, 2024
Verified Purchase
Great for high school math classes, durable too. Have bought 2

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Farside007
Good enough for high school student.
Reviewed in Canada on February 3, 2025
Verified Purchase
Buttons are large enough and display is easy to read.

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MC
Nice
Reviewed in Canada on January 7, 2025
Verified Purchase
Decent product. works well and my high school kid likes it

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Amy
Perfect
Reviewed in Canada on May 16, 2025
Verified Purchase
Perfect and cheaper than my campus store :)

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