This calculator was one of the best purchases I have made in a while. It is very useful for students at schools taking Higher and Advanced Higher Courses as it gas all the functions required for these levels of mathematics. It is also very useful for day-to-day calculations like daily shopping expenses or family accounts.

TaylorKeith

USA

I like the Casio FX-115ES scientific calculator. I think I have been using it for about six years now with no problems. The buttons have a good feel and the lcd display has good contrast and viewable angle. The button battery has never been replaced. The solar panel is enough to power the calculator even in low light situations. I like using the unit conversion. I often need to change miles to kilometers or celsius to fahrenheit. This calculator is a life saver. This calculator also has scientific constants, but I do not use this feature because I am no longer in school taking physics class. It is very useful for students who do need it for science class. The two-line lcd display is great in that you can see what you typed in and see the result in the second line. I would recommend this calculator.

bluesea

Minneapolis, MN

I bought the *Casio fx-115es* when I returned to college for my Computer Electronics Engineering degree. I wanted to purchase a Texas Instrument graphing calculator but I couldn't afford it. I have never regretted my money saving decision. The *Casio fx-115es* is your everday scientific calculator. It is slightly larger than a normal calculator making it very portable. It has a cover to protect it when not in use and to cradle it when you are using it. The calculator is also very durable. I have owned mine for nearly five years and other than some dirt and sratches, there are no problems with it. My favorite thing about this calculator is that I can enter a problem into the calculator in the same fashion that I write it. This comes in handy when helping my daughters with their pre-algebra homework. The downside is that for the non-mathematical, this calculator looks intimidating. Although I find that the intimidation factor ensures that no one takes my calculator. For added measure, I have the calculator programmed to display answers in fractions. This ensures that no one takes my calculator and a simple press of a button gives me a decimal answer.

cdzgrls

Dunnsville, VA

I use this exact calculator for college. I am currently doing my AS/A level mathematics and this calculator is absolutely perfect for the job. The calculator never randomly switches off (In my experience), it also is very impressive, as there are a large number of keys which provide myself, as a student all of the features to solve complicated math problems. I can't see any reason why this calculator is not the top of the list, I think this should be the first calculator anyone buys as it is extremely useful and not very expensive at all. I feel the price is fantastic for what this calculator brings me as far as satisfaction is concerned. However, my only criticism is down to personal preference. I prefer minimalst design, but the calculator is pretty ugly (but what do you expect!). Also, for maths beginners, the keys can be quite complicated as there are so many functions you can use in order to solve the different maths problems. But the keys are colour coordinated meaning you will know how to get to a function by pressing various buttons. I give this calculator a five star!

iMcMillan

Arimo, ID

I got this calculator because I wanted a powerful calculator to take with me for the Fundamentals of Engineering (FE) exam, formerly known as the EIT exam, and I cannot use my TI-89 graphing calculator. First off, this scientific calculator does more than all the other Texam Instrument scientific calculators I haved used, hands down. It has a built-in solver using Newton's Approximation Method, can integrate and differentiate, do summation, matrices, solves systems of equations, and more. Built into its memory, are 40 constants and 40 unit conversions. It has a "pretty print" similar to that of the TI-89, meaning fractions look like fractions one would write on paper, etc. Nice and decent sized display. The problems I have with it are these: 1. History is not easily selectable. What I mean by this is that I cannot select the answer of 2+ older previous line entries unless you save it as a variable. This is usually needed for many problems, to use answers from one set of equations into others. 2. The calculator resets its history once it turns off, including when it automatically turns off due to inactivity. So if Im writing out some calculations on paper to see what I should punch in to the calculator, if enough time has passes, the history is erased when the calculator turns off itself. But overall, I appreciate its power in a simple scientific calculator and recommend it to all engineers!

CivE89

Howell, NJ

I love my Casio. I had it for about 2 years now and it's been useful, especially for graphing. I never owned a high tech calculator before because they were so expensive. So, the real reason why I decided to purchase a Casio was because I needed it for my college pre-calc class and it was the less expensive at the time. I learned how to use my Casio as days went on, but I encourage other to learn how to use it before you need it for a big test or something. I'm just the kind of person who likes to learn as I go along, but eventually I figured it out. It is somewhat different then the Texas calc. as far as graphing and inputing the equations in a table, it's just a slight difference, you just have to make sure you have it in there correctly. I give it a thumbs up.

AnastasiaOsborne

Southfield, MI

The Casio FX 115ES calculator is made with a rich tradition and history of Casio electronics. Naturally one would expect a calculator of great quality and functionality, and that is something the users get. Many other users have reviewed and enjoyed this product, students, teachers, and businessmen alike. I've recently rented this calculator for my trigonometry class, and I was not disappointed. It did all of the trig functions I needed it to do. In fact, I recommended this calculator to my friend in college, who has far more advanced calculus classes, which include multi-variate calculus and linear circuits. Basically, it does everything you want, apart from graphing. It has all of the hyperbolic functions, and can even do numeric integration. Another beautiful aspect of this calculator is that it is solar-powered, and not battery powered like the popular TI calculators, which eat up batteries like nobody's business. It is a little difficult at first to use, but once mastered, the 115ES is a wonderful tool for any math occasion.

Gregdabunny

Perth Amboy, NJ

This is casios attempt at making a scientific calculator to rival TI. This calculator is perfect for middle school Pre-algebra classes, as they are its niche. Bottem line: This calculator is almost a copy of TI's. So if you have to choose, go with the cheaper one.

hooliovoncoolio

Fort Belvoir, VA

I purchased this Casio calculator because I was beginning my summer semester for college and I had to take my regular math class, along with a Pre Calculus course for school.  I am terrified of math to begin with, so I thought there would be no hope for me, especially in a summer math class.  Learn everything in half the time???  Never!!!  But thanks to my handy dandy scientific calculator, I was able to master the things I couldn't do by hand.  I even dropped it a few times, and it still works superbly!  It's not huge like some calculators, it is very very user friendly, the buttons are easy to read and the help sheet is easy to understand and follow.  I will continue to use this calculator for as long as I can, and when I have to move on to a graphing calculator, I will definitely pass it down to my little sister.  She's having trouble in math just like I was, maybe I should give it to her now LOL

dsuchak

Buffalo, NY