Use of calculator (significant figures mode)

[A dummy progression]

TL;DR Summary

Significant figures

Hello, it may be a little bizarre but I've a question: is there a significant figures mode on AUKORZ AK-991EX calculator? Or in a general CASIO fx-991EX?

 

[robphy]

possibly helpful: https://www.google.com/search?q=991EX+"significant+figures"+mode

 

[A dummy progression]

possibly helpful: https://www.google.com/search?q=991EX+"significant+figures"+mode

Thanks