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  • Casio Advanced Scientific Calculator with 2-Line Natural Textbook Display (FX-115ES)
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Casio Advanced Scientific Calculator with 2-Line Natural Textbook Display (FX-115ES)

by Casio
| 8 answered questions

Price: $24.75 & FREE Shipping on orders over $35. Details
In Stock.
Sold by EXCELLENT ELECTRONICS and Fulfilled by Amazon. Gift-wrap available.
  • 279 functions, including 40 metric conversions
  • 2-line, 12-digit Natural Textbook display
  • Solar Plus power with battery back-up
  • Slide-off protective hard case
  • Currently allowed on AP, SAT, PSAT, NMSQT, and all NCEES examinations.
20 new from $17.99 7 used from $19.00

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Frequently Bought Together

Casio Advanced Scientific Calculator with 2-Line Natural Textbook Display (FX-115ES) + FE Review Manual: Rapid Preparation for the Fundamentals of Engineering Exam + TI-36X Pro Scientific Calculator
Price for all three: $116.93

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  • Buy Used and Save: Buy a Used "Casio Advanced Scientific Calculator with 2-Line N..." and save 9% off the $20.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the "Amazon A-to-z Guarantee". See all Used offers.

Product Details

  • Product Dimensions: 6 x 3 x 1 inches ; 8.5 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B000A3IAHM
  • Item model number: FX115ES
  • Batteries 1 Nonstandard Battery batteries required. (included)
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (318 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: October 2, 2001

Product Description

Amazon.com

The Casio FX-115ES Advanced Scientific Calculator features over 279 functions and provides its user with everything they need for most mathematical calculations. The calculator's functions include complex number calculations, matrix and vector calculations, statistics, and 40 metric conversions. Its standout feature is its 2-line natural textbook display that displays fractions, formulas, square roots and other expressions as they would in your textbook. It is extremely versatile, and can be used in courses ranging from basic pre-algebra to calculus, and also has applications in physics, engineering, biology and statistics.

What's in the Box
FX-115ES scientific calculator, slide-on hard case, instruction manual, and quick reference guide.

Product Description

The Casio FX-115ES Advanced Scientific Calculator features over 279 functions and provides its user with everything they need for most mathematical calculations. The calculator's functions include complex number calculations, matrix and vector calculations, statistics, and 40 metric conversions. Its standout feature is its 2-line natural textbook display that displays fractions, formulas, square roots and other expressions as they would in textbook. It is extremely versatile, and can be used in courses ranging from basic pre-algebra to calculus, and also has applications in physics, engineering, biology and statistics.

Customer Questions & Answers

Customer Reviews

Great display and very easy to use.
aakash
This is an awesome calculator and it has all the functions needed for keeping up with my engineering classes, highly recommend it!
Nate
Using this mode, the display type is smaller and the entire complicated fraction can be viewed in natural format.
A reader

Most Helpful Customer Reviews

97 of 100 people found the following review helpful By N. A Wheeler on October 27, 2006
I bought this calculator's distant ancestor six or seven years ago in College and loved it ever since. The old model was the first calc that gave you graphing calculator editing capabilities in a small calc package and it was a steal for the $12 or $14 I paid for it then. This new generation is nothing short of a quantum leap forward. For the first time you can enter equations exactly as you would write them. The font switches to a smaller size, so you can review the whole equation at once. It also has a solver funtion that is intuitive and quick; I used it all the time on open channel flow problems, or any equation that would require more than mild rearranging of terms. This may be the only calc on the PE approved list that has this ability.

Other high points:

* excellent battery life and solar ability

* Table function

Minor quibbles:

* you may have to slow down the pace when keying in as it will miss keystrokes if you type too fast

* you have to hit Shift to get to 'X' (alpha) or Pi

* when editing an equation, very slow to cursor to where you want
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233 of 249 people found the following review helpful By Tony on September 18, 2009
I failed the FE last semester. Yes, probably one of 5 who failed out of like thousands who did fine. Needless to say I'm ashamed. I was a last semester senior in civil with a completely overwhelming 18 hour schedule which I should have known was suicide. Plus many other personal life complications and interruptions. All that business led me to completely put off all studying for the FE thinking it would be a sinch. Plus, friends had said it wasn't that bad at all. Lesson learned. Study for this test! I will not allow myself to fail this test again. Unless you're a genius, do not put off the studying like I did. I'm a 3.5 gpa student.

I'm registered to take this test again this October. I'm now a grad student and my schedule is actually much more realistic. I have been studying with a partner 2-3 times a week, for several hours at a time. We help push each other when we we're stuck. We both have the giant FE review manual by lindebergh. Also, go to the NCEES site, print out the Reference Manual available in pdf at kinkos and have it bound there. It is vital to get to know your way around it.

CALCULATOR!!! I actually owned this Casio fx 115ES for my first time taking the FE. Though I had spent a little time getting to know it before the test, I have realized only recently that it was not near enough! I have vowed to know this thing inside and out and in the process I have realized that this may be the best calculator ever created.

I have used a TI-86 for years. I always loved the TI setup so I thought about getting one of TI approved models, but the fx-115ES was rated a lot higher and had better reviews than the other calculators permitted on the exam. I got it. It frustrated me for a while because it seemed so unlike the format of TIs.
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66 of 69 people found the following review helpful By Joel Kolstad VINE VOICE on June 4, 2007
I had an upcoming exam that specifically prohibited programmable calculators, so while I have quite the "stable" HP RPN machines, all of them were out. The FX-115ES was what I found as a substitute, and I'm quite impressed, especially for the price (which is $18 at Target, BTW). The machine works well and is quite feature-laden and easy to use -- I believe it is the most powerful non-programmable, non-graphing machine out there, and at a price where you can afford a few spares to spread around your home, office, car, etc. so that you don't have to worry about losing one.

I've had tons of calculators over time, with the Casio FX-4000P (back in the late '80s) being the first truly memorable one (my brother had an FX-7000G, the first graphing calculator). I switched to HPs in college, and I am still an RPN die-hard (I'm eagerly awaiting the release of the 30th anniversary HP-35s this summer!), but I can still appreciate a quality product such as this from Casio.
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22 of 23 people found the following review helpful By InverseIQ on April 23, 2007
Verified Purchase
Casio has always been about Bang-for-the-buck and they have gotten really good at it too. I loved the constants and conversion features. The only aspect i don't like about this calci is it switches itself off after a short while, often while you are contemplating what to do. This is annoying because all the previous calculations in memory or the value on the display get viped out. This is why I am stripping one star out of its rating.
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25 of 30 people found the following review helpful By Anonymous on March 25, 2006
This calculator does some great things: solve 2nd and 3rd degree polynomials (quadratic and cubic equations), solve 2-eq-2-unknowns and 3-eq-3-unknowns (must be in the correct form), solve equations of any form that contain 1 variable type, convert degrees/radians, convert rectangular/polar, solve integrals/derivatives/summations that have numeric answers, it keeps answers in "exact" notations (a result can show up to be "5/2 pi", and press a button to toggle the decimal value), it can do simple matrix operations on up-to 3x3 matrices, it can accept an "f(x)=..." and produce a table of values when you input the start value, stop value, and step (you must limit it to 30 results), and you can input a bunch of data values and instantly calculate the mean and standard deviaion. The screen is huge, allowing for menus that haven't been possible on previous scientific calculators, and it's easy to enter fractions with lots of stuff in the numerator/denominator.

Some poor interface decisions were made. The "Shift" and "Alpha" colors are dark yellow and red, and it's hard to see the difference. There's no "X" key--you have to hit [Alpha] [X], yet there are keys for "M+", "^2", "^-1", and two very similar "log" keys; this is extremely annoying, as I use "X" all the time. When editing your input you can't hit [Shift] [right arrow] to jump to the rightmost side (as you can on a TI graphing calculator). If an answer is on the screen, you can't hit [square root] [=]; you have to hit [square root] [ans] [=]. It's annoying that you can't use "Polar(a,b)" or "Rect(mag,theta)" in Complex mode. Finally, just for fun, my own personal benchmark, "69!", is slower to compute than with previous fx-115 calculators.
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