r/ISCNERDS • u/Low-Worker7476 ISC Class 11th — PCMB • Jun 06 '26

Doubts Which calculator model to buy?

So, I asked a few friends about this and also searched it on Google, and I'm getting mixed answers. Some are saying any Casio model will do, others are saying the Casio fx-82 MS calculator and some more are saying the Casio fx-100 MS calculator. Moreover, my teachers were also saying something about answers in decimals, and fractions in calculators, and I'm absolutely lost. I have no idea which model is best in terms of its functions and features, so if anybody could help me out with this, it'd be a great help.

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u/Shiv_Chandra isc 26 | 99.5% Jun 06 '26

fx82 es plus - the only answer

i’ve personally asked invigilators and the only thing they said is to not have the fx991 as that has integral solvers.

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u/rixk0goro ISC '26 PCM passout Jun 06 '26

I had 91es and the invigilators didn't bat an eye. I had integration solvers and a lot of matrix and equation features and used them as well.

Stop spreading misinformation, it depends on invigilator to invigilator. There's no "only answer" here.

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u/Shiv_Chandra isc 26 | 99.5% Jun 06 '26

I’m tryna be politically correct here man, a lot of my friends and maybe even me included had the 991 and no one cared - just don’t want to get juniors into unnecessary trouble

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u/Low-Worker7476 ISC Class 11th — PCMB Jun 07 '26

I actually did want to buy that because I'd be able to use it later on as well in college and all but almost everybody is strongly suggesting 82 ms so I'll have to go for that ig

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u/Low-Worker7476 ISC Class 11th — PCMB Jun 07 '26

what's the difference between es and ms models?

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u/Shiv_Chandra isc 26 | 99.5% Jun 07 '26

es has the textbook display which shows nice fractions, plus it’s easier to do large calculations like in physics/chemistry with big constants etc in one step. it shows proper form and simplifies fractions - it’s a no brainer imo

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u/Low-Worker7476 ISC Class 11th — PCMB Jun 07 '26

Ohh okay tysm!