Maybe everything is possible on the Casio, but it’s so much clearer on the NumWorks (especially for eg. Physics questions, where you might want to retrieve values you calculated earlier with full precision, etc). Genuinely felt like a cheat code when I was in highschool. I showed mine to my teacher and they swapped the whole’s schools standard calculators from the Ti-84 CE to the NumWorks, which is cheaper too.
I mean what do these do? I think like 10 digits worth?
If you're actually doing something requiring over 10 digits of accuracy and you can reliably hit that you probably have a $10 million lab...
So honestly what are we talking about here...If it's pure mathematics this is a bad tool for that as well.
In the exam, you'd also be at a disadvantage without advanced graphing.