Best Scientific Calculator Casio FX-991ex in Canada 2025
Updated on 07/16/2025
#1
Recommended
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- Natural textbook display
- List-based statistical data entry
- Multi replay
- Slide on hard plastic case
- Ideal for Keystages 3, 4 and above
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- Natural textbook display
- List-based statistical data entry
- Multi replay
- Slide on hard plastic case
- Ideal for Keystages 3, 4 and above
#2
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14% Off
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- High-resolution display with adjustable contrast for improved cursor visibility
- Supports numerical differentiation and integration
- Capable of 4x4 matrix, vector calculations, and complex number operations
- Offers two-variable statistical regression and visualization, with QR code functionality
- Includes QR code for authenticating CASIO products
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- High-resolution display with adjustable contrast for improved cursor visibility
- Supports numerical differentiation and integration
- Capable of 4x4 matrix, vector calculations, and complex number operations
- Offers two-variable statistical regression and visualization, with QR code functionality
- Includes QR code for authenticating CASIO products
#3
18% Off
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- Natural textbook display
- Numerical differentiation and integration
- 4x4 matrix and vector calculations
- Statistical regression for two variables
- Complex number operations
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- Natural textbook display
- Numerical differentiation and integration
- 4x4 matrix and vector calculations
- Statistical regression for two variables
- Complex number operations
#4
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- 16-digit, 4-line LCD display
- Natural textbook display replicates expressions and results as seen in textbooks
- Over 280 functions including fractions, statistics, complex numbers, base arithmetic, linear regression, standard deviation, and polar-rectangular conversions
- Multi-replay function enables backtracking through calculations to edit expressions and recalculate
- Includes 40 metric conversions and 40 scientific constants
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- 16-digit, 4-line LCD display
- Natural textbook display replicates expressions and results as seen in textbooks
- Over 280 functions including fractions, statistics, complex numbers, base arithmetic, linear regression, standard deviation, and polar-rectangular conversions
- Multi-replay function enables backtracking through calculations to edit expressions and recalculate
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#5
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- Scientific calculator featuring 425 advanced functions with solar and battery backup
- Supports natural display of mathematical input and both decimal and math output
- Includes integration calculations, statistical functions, and base-n calculations with conversions
- Offers a list-based data editor for standard deviation, quartiles, and regression analysis
- Handles vector and matrix operations, including Ref/rref and polynomial equation solving
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- Scientific calculator featuring 425 advanced functions with solar and battery backup
- Supports natural display of mathematical input and both decimal and math output
- Includes integration calculations, statistical functions, and base-n calculations with conversions
- Offers a list-based data editor for standard deviation, quartiles, and regression analysis
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#6
10% Off
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- 522 calculation functions across mathematical disciplines, including trigonometric, calculus, and statistical methods, suitable for various scientific and engineering applications.
- Integrated notepad with a locking key to prevent accidental deletions, allowing users to take notes while calculating efficiently.
- Powered by solar energy and rechargeable through Type-C port, ensuring reliable usage without the hassle of battery changes.
- User-friendly keyboard equipped with scientific symbols and function keys, streamlining complex calculations for students and professionals alike.
- Essential tool for students in middle/high school and college, enhancing learning and problem-solving capabilities.
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- 522 calculation functions across mathematical disciplines, including trigonometric, calculus, and statistical methods, suitable for various scientific and engineering applications.
- Integrated notepad with a locking key to prevent accidental deletions, allowing users to take notes while calculating efficiently.
- Powered by solar energy and rechargeable through Type-C port, ensuring reliable usage without the hassle of battery changes.
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#7
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- Accepted for maturity examinations
- Displays numerical expressions in a textbook format
- Offers 24 levels of brackets for calculations
- Calculates regression and correlation coefficients
- Solar-powered with battery backup; dimensions: 1.5 x 7.5 x 16.2 cm
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- Accepted for maturity examinations
- Displays numerical expressions in a textbook format
- Offers 24 levels of brackets for calculations
- Calculates regression and correlation coefficients
- Solar-powered with battery backup; dimensions: 1.5 x 7.5 x 16.2 cm
#8
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- 【552 Calculation Functions】Scientific calculators 991ex features 552 functions, including spreadsheet, exponential, matrix calculation, statistics, integration, algebra, complex number calculation, standard deviation, and more, suitable for handling complex equations and statistical data. From beginner to advanced courses, its practicality can meet the needs of various digital fields.
- 【High Resolution & Multi-line Display】991ex scientific calculator is equipped with a high-resolution multi-line display that supports natural display of mathematical formulas and fractions, presenting expressions intuitively and showing the calculation process and results simultaneously. Adjust the screen contrast according to your preference for a clear and comfortable experience.
- 【High-Efficiency Calculator】Scientific calculators has an integrated spreadsheet mode that supports data input and formula calculation; advanced operations such as 4×4 matrix and vector operations, with a quad-core processor to enhance calculation speed, making it faster to solve high-order equations and perform matrix operations, meeting the needs of efficient calculation.
- 【Long Battery Life & Durable】Fraction calculator has a dual power system of solar and button battery for long-lasting operation. It automatically shuts down after 8 minutes of inactivity. Sliding back cover protects the calculator body, making it pressure-resistant and durable, meeting the needs of high-intensity study and outdoor use, providing peace of mind in exam scenarios.
- 【Ultra-light & Portable】Advanced scientific calculators is designed to be lightweight (about 125g), suitable for carrying around. The button layout is clear, and the anti-slip material enhances the operation feel. It has various function keys to simplify complex calculations, including a "CHG" button for switching between fractions and decimals, making precise value calculations easy.
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- 【552 Calculation Functions】Scientific calculators 991ex features 552 functions, including spreadsheet, exponential, matrix calculation, statistics, integration, algebra, complex number calculation, standard deviation, and more, suitable for handling complex equations and statistical data. From beginner to advanced courses, its practicality can meet the needs of various digital fields.
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#9
12% Off
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- Technical scientific calculator ideal for technical school use
- Includes 417 functions, offering 14 additional functions compared to its predecessor
- Enhanced with random integer support and improved equation mode
- Features a Natural Display for easy readability of mathematical expressions
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- Technical scientific calculator ideal for technical school use
- Includes 417 functions, offering 14 additional functions compared to its predecessor
- Enhanced with random integer support and improved equation mode
- Features a Natural Display for easy readability of mathematical expressions
#10
16% Off
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- Natural Textbook Display for easy reading
- Non-programmable scientific calculator with 417 functions
- Basic trigonometric and statistical functions included
- Color-coded keypad for easy differentiation
- Includes a protective hard case
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- Natural Textbook Display for easy reading
- Non-programmable scientific calculator with 417 functions
- Basic trigonometric and statistical functions included
- Color-coded keypad for easy differentiation
- Includes a protective hard case
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