fx-300ES Plus 2nd Edition – Standard Scientific Calculator | 262 Functions, Natural Textbook Display℠ | Ideal for Middle, High School Math, Statistics & Algebra | Black

This calculator is a very good one! It is a very good working calculator and doesn’t require batteries which is great! I love it for its price! Has everything you need for algebra and more!

Excellent, long battery, nice color works so good, easy to use, I love this brand

Very good calculator. It’s neat and easy to use.

As a teacher and someone who values clarity in mathematical thinking, I’m genuinely impressed by this calculator. The Natural Textbook Display is a game-changer—it shows fractions, roots, and equations exactly as they appear in textbooks, which helps students avoid common input errors and better understand their work. With 262 built-in functions, it’s perfect for everything from basic algebra to trigonometry and statistics. I’ve used it to model step-by-step problem solving in class, and my students find it intuitive and easy to navigate. The solar power with battery backup is a thoughtful touch—no more worrying about dead batteries during a test. It’s lightweight, durable, and affordable, making it ideal for middle and high school students. Whether you're teaching or learning, this calculator supports deep understanding rather than just quick answers.

Works as it should.

I'm an adult scientist who grew up with basic calculators, then scientific calculators, and finally graphing calculators throughout my education and who prefers physical calculators instead of apps on a phone or computer, especially when dealing with fractions, exponents, or roots. Graphing calculators are powerful, but bulky and require battery changes at inconvenient times (tip: use lithium or low-self-discharge NiMH rechargeable batteries instead of alkaline batteries in graphing calculators since they don't leak!). I was in the market for a scientific calculator that offered the typical range of scientific functions (e.g. trigonometric functions, exponents and roots, logs, etc.), was solar powered with a battery backup, offered a "natural" (that is, dot-matrix) display for entering input and viewing results in standard form (rather than simply showing decimal results), and a moveable cursor to highlight and make changes to input. I was pleasantly surprised to find this model, which offered all those features for less than $12. In addition, it offered some additional helpful features like being able to calculate the Greatest Common Divisor or Least Common Multiple for pairs of numbers, coordinate conversions, permutations and combinations, and many more. The buttons provide good tactile feedback, and are suitable for use by both children and grown adults. Calculations are performed swiftly with no detectable lag in most cases (some operations take a noticeable split second to carry out, but most are effectively instant), and the ability to have results displayed in exact form (for example, sin(45 degrees) = 1/sqrt(2) rather than 0.70710678199) with the ability to also switch the display to show them in as floating point decimals and back again is very convenient. Entering input is straightforward and intuitive. The screen contrast is adjustable in the menu. Although the calculator does not have a "solve for x"-type equation solver to solve algebraic equations, nor does it have the ability to graph results (which is perfectly fine, nor were those things I would expect in such a device), it's packed with features and functionality that make it extremely powerful and handy. My only quibble is that I wish the ON, OFF, and AC button all shared a single key instead of the ON button being separate. Out of habit, I find myself pressing the AC button in an attempt to turn the calculator on and it's annoying that pushing that button doesn't work to turn it on; one needs to press the separate ON button. It'd be virtually perfect if AC button also doubled as the ON button, and SHIFT+ON/AC turned the calculator off. Still, for less than $12 this calculator is an outstanding value and performs functions that scientists of even a few decades ago would be envious of and willing to pay considerably larger sums for. I like it and recommend it.

It's easy to use and great. It's invaluable for schoolwork, handling things like roots and calculations with parentheses. Plus, it's lightweight and easy to carry around. That's CASIO for you!

Needed this for maths class and it’s easy to manage. No setup required instruction is clear and the quality is good for the price. Fit perfectly in my bag pack.