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expiredSweet.sour posted Sep 07, 2023 03:26 AM
expiredSweet.sour posted Sep 07, 2023 03:26 AM

Casio fx-300ES PLUS Standard Scientific Calculator (2nd Edition, Various Colors)

$9.80

$29

66% off
Amazon
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Amazon has Casio fx-300ES PLUS Standard Scientific Calculator (2nd Edition, FX-300ESPLS2) on sale for $9.79. Shipping is free w/ Prime or on $25+ or $35+ orders (minimum requirement varies by location).

Thanks to Community Member Sweet.sour & michi098 for sharing this deal.

Colors Available:
About this Item:
  • 249 built-in math functions
  • Scientific calculator with Natural Textbook Display can display fractions, derivatives, integrals, sums, and other operations similar to their display in math textbooks
  • Perfect choice for middle school through high school students learning general math, trigonometry, statistics, algebra I and II, pre-algebra, geometry, physics
  • Features linear regression, quadratic regression, logarithmic regression, e-exponential regression, ab-exponential regression, power regression, and inverse regression
  • Can transform a displayed decimal calculation result to a fraction or mixed number

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Rated 4.7 out of 5 stars from customer reviews.
    • At the time of this posting, our research indicates that this is $1.50 lower than the next best available prices starting from $11.29. -SaltyOne
  • About this Store:

Original Post

Written by Sweet.sour
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has Casio fx-300ES PLUS Standard Scientific Calculator (2nd Edition, FX-300ESPLS2) on sale for $9.79. Shipping is free w/ Prime or on $25+ or $35+ orders (minimum requirement varies by location).

Thanks to Community Member Sweet.sour & michi098 for sharing this deal.

Colors Available:
About this Item:
  • 249 built-in math functions
  • Scientific calculator with Natural Textbook Display can display fractions, derivatives, integrals, sums, and other operations similar to their display in math textbooks
  • Perfect choice for middle school through high school students learning general math, trigonometry, statistics, algebra I and II, pre-algebra, geometry, physics
  • Features linear regression, quadratic regression, logarithmic regression, e-exponential regression, ab-exponential regression, power regression, and inverse regression
  • Can transform a displayed decimal calculation result to a fraction or mixed number

Editor's Notes

Written by citan359 | Staff
  • About this Deal:
    • Rated 4.7 out of 5 stars from customer reviews.
    • At the time of this posting, our research indicates that this is $1.50 lower than the next best available prices starting from $11.29. -SaltyOne
  • About this Store:

Original Post

Written by Sweet.sour

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+55
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Model: 2nd Edition Scientific

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Sort: Lowest to Highest | Last Updated 12/27/2025, 06:37 PM
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Top Comments

The_Love_Spud
5189 Posts
2005 Reputation
This is exactly what has led to TI's dominance. Even as an owner of a firmware-upgraded Casio fx, I'd still primarily recommend a Casio model to a calculator enthusiast. For the average student I'd generally start with identifying the TI model appropriate to the task.

Good luck!
Jon

60 Comments

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Sep 08, 2023 06:28 PM
111 Posts
Joined Dec 2010
vaderzimSep 08, 2023 06:28 PM
111 Posts
Quote from smartdeals :
got 1 for grocery shopping
If I forgot my phone I just pull a cheap 1 off the store shelf and use that.
2
Sep 08, 2023 07:32 PM
527 Posts
Joined May 2004
PeteCSep 08, 2023 07:32 PM
527 Posts
Quote from RogerB :
I have a HP 48s emulator app on my iphone. I never had the 48s, I had the 28s. These days I just use the stack to do number crunching. I don't need to solve 10 x 10 matrices like I used to.
I use Droid48 but the screen is small. It has just a basic mode that helps.

The best was the HP28. It opened like a book. Lots of keys,

I gave it to my son when I got a good price on the 48. I should ask for it back.
Sep 08, 2023 07:34 PM
527 Posts
Joined May 2004
PeteCSep 08, 2023 07:34 PM
527 Posts
Quote from RogerB :
I have a HP 48s emulator app on my iphone. I never had the 48s, I had the 28s. These days I just use the stack to do number crunching. I don't need to solve 10 x 10 matrices like I used to.
I use Droid48.
The 28s was the best.
Sep 08, 2023 08:39 PM
553 Posts
Joined Nov 2010
catbertSep 08, 2023 08:39 PM
553 Posts
Quote from babygdav :
Varies across America, even per class.

Honestly though, not making America's kids any smarter at math after they allowed calculators even on college admission tests.

https://m.youtube.com/watch?v=yj7XbnYrIk0

https://www.pewresearch.org/wp-co..._table.png

And that's even after rich states like CA spending 2x+ more on K-12 than many of the countries beating America on standardized math tests.

Just buy the minimum (cost) required, but absolutely have the kids learn to do their homework by pencil and paper only, Fast.

Simply learning how to use the abacus well enough to visualize working a virtual one in one's mind (2, 3 years of lessons) will allow the little ones to murder classmates on a ton of math tests.

Disagree. What you have is a French/Asian's education-by-brutality mentality, thinking kids gets smarter by making them do things the painful way to train their muscle memory. These kind of 'smart' kids lack creativity and are merely good for menial labor if they didn't happen to have developed other qualities elsewhere.


I grew up in a system where they make students solve quadratic equations in surds (in terms of exact values including square roots) to make sure you cannot use calculators for approximate solutions. SAT math was kids play for me yet I appreciated the conceptual insight when I saw the American system teach students to solve it with a graphing calculator finding the intersect, which is the spirit of (quadratic and linear) functions and I was ashamed that the first thing that came to my mind was the formula from rote memorization. This is where the American system has an edge. Of course you get a lot of dumb kids who can't barely function, yet the ones who made it has a creative edge other places won't get.
Sep 08, 2023 10:49 PM
168 Posts
Joined Sep 2007
DhinchakSep 08, 2023 10:49 PM
168 Posts
Quote from klingon_master :
It also depends on what kind of math you are doing. I know with the TI-30XIIS you can at least some very basic statistics stuff. The suggested retail price for the Casio fx-300es plus is 28.99. So this is a real slickdeal.
While this is a good calculator, the suggested retail price seems artificial -- target has it for same price of $9.79 (5% less with red card) and with the listed "regular" price of $12.99

https://www.target.com/p/casio-fx...A-79389428
Sep 09, 2023 01:05 AM
59 Posts
Joined Jul 2018
tangibilitySep 09, 2023 01:05 AM
59 Posts
Quote from undrtkr :
Free42 does it for me. (search Play/App Store).
I've used Free42 (among others). It's a decent emulator, but nothing can replace the tactility and precision of a real HP scientific RPN calculator. With emulators on phones, when I'm trying to do problems the way I would on a real calculator (i.e. extremely fast), I find I'm frequently missing button presses. In practice, it just doesn't work for what these calculators were originally designed for--speed, with faultless operation, and never a missed keystroke.

I don't understand why HP won't just make the 32S, 42S, and/or 15C again, as permanent products (not a limited-run thing like they did with the 15C about a decade ago). It makes no sense, particularly with the 15C since they're already manufacturing another Voyager-series calculator, the 12C, and as such it would literally be zero effort for them to carry it as a regular product. It's ludicrous. I pity today's younger engineers and scientists. Their lives are way more difficult than is necessary, all because there are no good scientific RPN calculator options available today.
Sep 09, 2023 04:49 AM
59 Posts
Joined Jul 2018
tangibilitySep 09, 2023 04:49 AM
59 Posts
Quote from PeteC :
Still looking for a good RPN calculator to replace my worn out HP 48
Agreed. HP needs to figure out that there is still a very large group of us that want scientific RPN calculators. There's no reason they're not at least making the 15C as they already have everything in-place to do so given they continue to manufacturer the 12C financial calculator. All they'd need to do is change what's printed on the keys and use the 15C ROM instead of that for the 12C. I just don't get why they've abandoned this entire section of the market.

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Sep 10, 2023 03:57 AM
887 Posts
Joined Oct 2014
ronderSep 10, 2023 03:57 AM
887 Posts
Quote from Analog :
As a programmer, I would prefer a calculator with hexadecimal. I don't see this option with the TI, unless I missed it....
These Casios don't have hex/oct/bin either. Don't be fooled by the A-F alt keys. Those are just more mem slots.
Sep 10, 2023 08:44 AM
339 Posts
Joined Mar 2009
jb137Sep 10, 2023 08:44 AM
339 Posts
It is missing +/- [sign changing] button. I have to use that button a lot in scientific cal. Though one can multiply by -1, it is a pain.
Last edited by jb137 September 10, 2023 at 11:56 AM.
Sep 10, 2023 08:27 PM
39 Posts
Joined Sep 2019
AlexinoSep 10, 2023 08:27 PM
39 Posts
Is this calculator good for a 9 grade student asking cause so far I don't have the list of school supplies from algebra teacher
Sep 10, 2023 10:02 PM
90 Posts
Joined Dec 2013
bob_e_digitalSep 10, 2023 10:02 PM
90 Posts
Quote from jb137 :
It is missing +/- [sign changing] button. I have to use that button a lot in scientific cal. Though one can multiply by -1, it is a pain.

Legit question: is there another scientific calculator that does this?

Not my use case, but just curious. I just ordered this calculator just for fun since I've only ever used Texas Instruments and wanted to see the differences.


Edit: Nevermind, I did a quick search and saw that it's on the TI-30Xa. Never used this particular TI calculator before. I used some random basic calculator then TI-30XIIS, TI-82, and finally TI-86. Recently used a TI-30XS and TI-36X Pro.
Last edited by BobbyIncognito September 10, 2023 at 05:12 PM.
Sep 11, 2023 08:59 PM
405 Posts
Joined Sep 2011
coldfusionSep 11, 2023 08:59 PM
405 Posts
Quote from jb137 :
It is missing +/- [sign changing] button. I have to use that button a lot in scientific cal. Though one can multiply by -1, it is a pain.
It has a sign change button. It looks like a minus in parens. Hit that button then =.
Sep 11, 2023 09:13 PM
405 Posts
Joined Sep 2011
coldfusionSep 11, 2023 09:13 PM
405 Posts
I picked up both the Casio fx-300ES PLUS in this deal as well as the TI-30X IIS.

Wow, these things both feel cheap. I'm not sure how they both sell for $30 regularly. They're both super light/poor quality plastic. If you're familiar with the TI-30 solar from back in the 90's, they were way higher quality. If someone handed me these, without me knowing, I'd say they were $10 (TI) and $15 (Casio) calculators. And they are in this deal, so I guess that's good.

Looking at them/holding them, the Casio looks like a more expensive calculator. It has larger buttons and a better display. The buttons on the Casio are concave, and the TI are convex and smaller. The TI's buttons are nicer to press though. Annoyingly on both calculators, if you're using multiple fingers, you can only 'press' one button at a time. If you hit 4, then 5 (without completely releasing the 4) the 5 won't register even if it's pressed second. Maybe shouldn't be expected at this price, but it'll definitely slow you down.

The TI is super thin at the bottom then gets fatter as you go up, which again, makes it look cheap. The Casio looks much better. But out of the box it's also more annoying. On and Off on the TI are the same key with the 2nd function applied. On the Casio, it's two different buttons for some reason, which is an odd choice. Also, out of the box, it renders everything in fractions rather than decimals. So if you do 3 divided by 5 it returns 3/5, instead of 0.6. It's nice that it can do fractions, but not something you can just hand to someone as-is. There's a button to flip back and forth to decimal and I'm sure it can be set up that way by default, but when if first took it out of the box I went searching for directions.

If I had to live with one of them, I'd take the TI, the buttons just feel better and it's more intuitive, which is a shame because the Casio looks much better.
Last edited by coldfusion September 11, 2023 at 03:18 PM.
Sep 12, 2023 03:45 AM
23 Posts
Joined Jun 2014
crissyyys2Sep 12, 2023 03:45 AM
23 Posts
Quote from Nattefrost :
unfort. my kids schools require TI TI-30X IIS or TI-30XS
https://www.amazon.com/dp/B00000J...60INT&th=1

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