Top 10 Best Casio Fx-991

Redesigned ES PLUS series calculators featuring easy-to-understand Natural Textbook Display, Non-Programmable Scientific Calculator with 417 Functions. Stylish design but same function as Casio FX-991ESPLUS 1st edition, 10-digit mantissa 2-digit exponential display. Basic Trigonometrical Statistics Functions, and many more functions. Colour coded keypad for easy key differentiation, Simple and easy to use, Comes with new slide on hard case.

Admitted to maturity exams. Natural display to insert and display numeric expressions as they appear on textbooks. 24 levels of brackets. Regression and correlation coefficients. Solar Power and Battery.Dimensions 1.5 x 7.5 x 16.2 cm.

The natural display natural-v.p.a.m. It shows mathematical expressions such as roots and fractions that appear in your textbook, and this increases understanding because the results are easier to understand..

Efficient Calculations Our calculator now reduces keystrokes by 50 through intelligent optimization, including shortcut keys, editable expressions, matrix operations support table-based input and viewing, etc., greatly enhancing efficiency. Additionally, weve improved the user manual to make it more concise and user-friendly, allowing you to get started quickly. 417 Essential FunctionsPacked with 417 key functions, this calculator covers everything from Equation Solving and Trigonometry to Integration, Differentiation, Matrix Operations, Complex Number Calculations, Variable Statistics, Linear Algebra, and Function Analysis, making it a versatile tool for all mathematical needs. Textbook-Like Written DisplayFeaturing a written display format that mimics textbook expressions, this calculator makes reading and input easier than traditional models. It seamlessly converts between fractions and decimals, ensuring precision and ease in handling exact values. Smart History and Quick RecallWith the smart history feature of the scientific calculator, you can quickly retrieve and effortlessly reuse or edit previous formulas, whether you are working with complex equations or common calculations. Say goodbye to repeated input and enjoy a more streamlined and efficient experience. Perfect for High School and College StudentsDesigned for all academic levels, this calculator is perfect for high school students in courses like Algebra II, Pre-Calculus, and Calculus, while college students will find it essential for advanced subjects such as Linear Algebra and Differential Equations. It meets the needs of both groups, from foundational to advanced topics.

417 Calculation Functions The scientific calculators has 417 different calculation function built-in, including trigonometric function, exponential function, logarithmic function, calculus, statistics, algebra, and other advanced mathematical functions. It also supports complex number calculations, matrix calculations, vector calculations, etc., and can meet the various scientific and engineering calculation needs .. Large Screen Four-Line Display The scientific calculator adopts a four-line large screen design, which is convenient for users to read. It also supports the natural display, which can directly display the input and output of mathematical formulas on the screen, making complex calculations more intuitive.The key SHITT -MODE SETUP DOWN -6 LEFT Continue RIGHT .Use LEFT and RIGHT to adjust screen brightness .. Dual Power This calculator has a built-in solar panel and durable battery, which can be used continuously for many years in indoor and outdoor environments, reducing the frequency of battery replacement and making it more economical. This also makes it the best choice for people who need to use it for a long time, such as school supplies, high school students, accountants, and non-programmable calculators .. Multi-Functional Keyboard The calculator has a keyboard with many scientific symbols and function keys built-in, making it easy to perform various calculations and functions. Especially for people who need to perform scientific calculations frequently, this keyboard design can greatly improve their calculation efficiency, such as teachers, engineers, college students, nurses, and accountants .. The Best School Supplies This calculator is very suitable for students in elementary school, junior high school, high school, college, engineers, nurses, and teachers, etc. It can meet their calculation needs in the fields of mathematics, science, and engineering, and help them better understand and apply knowledge. Therefore, as a gift, it can be given to these people who need to perform scientific calculations. ..

417 FUNCTIONS This scientific calculator boasts 417 function, including algebraic, fraction, derivative, integral, statistical, complex number calculation, linear regression, standard deviation, permutation and combination, and variable solving, similar to operations found in math textbooks. It is well-suited for advanced and basic courses, high school and college students. LARGE DISPLAY SCREEN lts screen is large enough to display four lines of numbers,.making it easier to read than traditional calculators. The written display of expressions allows you tosee the calculation process and results, making it a non-programmable calculator. SOLAR AND BATTERY DUAL POWER SYSTEM The calculator features a dual power systemthat uses both solar and battery power, allowing users to use it anytime, anywhere, without worryingabout battery issues. STABLE AND RELlABLE The scientific calculator is made with high-quality materials, has asturdy and durable exterior, and is easy to operate, with stable and reliable performance. WIDE RANGE OF USERS As an essential school supply, middle school supplies, it is ideal for elementary, middle,and high school students, college students, engineers, nurses, and teachers, among others. lt can meettheir calculation needs in math, science, and engineering felds and help them better understand andapply knowledge. As a gift, it can also be given to those who need to do scientifc calculations, makingit a practical and meaningful school supplies.

991ES Multifunctional Scientific Calculator - ROATEE business calculator features 417 computing functions, which is more than the common scientific calculator on the market. And this can meet almost all of your daily computing needs.. Scientific Calculator with Notepad - This scientific calculator for students intergrates calculation and notebook with a stylus pen. The lcd writing tablet enables you to take notes during the calculation, which do great help for study and work. Great portable high school supplies NOTEOnly Unlock the LOCK KEY will the writing area and the erase button work.. Dual Power Solar Panel Coin Battery - The replaceble coin battery is built in this scientific calculator. It is also powered by solar energy so you don't need to worry about battery depletion.. Anti-Drop Body with High Durability - The body of this scientific calculator undergoes rigorous quality tests. Due to the design of anti-drop body, no need to worry about the damage by accidentally falling.. Lightweight and Portable Design - This lightweight scientific calculator only weighs 5 ounces.It can be easily put in your pocket, which is convenient for business and college.. Conversion of Fraction and Decimal - You can change the results through the key 'SD' Or you can configure calculator setting 1. Press the button 'SHIFT'. 2. Press the button 'MODE'. 3. Choose 1 or 2 to set the mode of fraction or decimal. MthIO for fraction, LineIO for decimal. What Will You Get - 991ES scientific calculator1,instructions1,exquisite packing box1,packing case1..

High Resolution Display to view more data like spreadsheets and 4x4 matrix calculations. Natural Text book display - symbols and numbers appear just as they do in textbook. Numeric IntegrationDifferentiation. 552 functions. Simultaneous and Polynomial Solver. Solar Powered with Battery Backup LR44 Button Cell Battery Included. Rounded keys for easier inputs. 4-tone display makes operation easier. Intuitive navigation with cursor keys. Works with ClassPad.net.

Natural Textbook Display provides easy view of calculations. Protective hard case helps prevent damage when stored. Solar power operation ensures consistent use. Perfect for Algebra, calculus, statistics and more.

Natural Textbook Display- Can display fractions, derivatives, integrals, sum and other operations similar to their display in math textbooks.. Converts between Standard form and a Decimal, Reviewedit previous entries, Random Number Generator.. 2-function Table of values fx, gx, Statistics and Linear Regression, Integer Division with a Remainder.. Random Number Generator, Integer Division with a Remainder.. Greatest Common Divisor, Least Common Multiple..