Is it a Maths Qualification if you don’t know the Math behind the Sci Calc buttons?

Wiki on the Sci Calculator

Always verify wiki info.

https://en.m.wikipedia.org/wiki/Scientific_calculator

Which Apps are best – havn’t found a good one yet,  phone calcs are not Sci Calcs be very careful.

http://www.explainthatstuff.com/calculators.html
is this the reason for the non calculator paper?