![Why does the German version of the Casio fx-991EX, the fx-991DE X, have more functions than the US version? : r/calculators Why does the German version of the Casio fx-991EX, the fx-991DE X, have more functions than the US version? : r/calculators](http://i.imgur.com/jvKl3Qg.png)
Why does the German version of the Casio fx-991EX, the fx-991DE X, have more functions than the US version? : r/calculators
![Casio FX-991DE X ClassWiz Scientific Calculator with Natural Display : Amazon.de: Bürobedarf & Schreibwaren Casio FX-991DE X ClassWiz Scientific Calculator with Natural Display : Amazon.de: Bürobedarf & Schreibwaren](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/51xc0Th1jVL._AC_.jpg)
Casio FX-991DE X ClassWiz Scientific Calculator with Natural Display : Amazon.de: Bürobedarf & Schreibwaren
![FX-991DEX Casio FX-991DE X Desktop Wissenschaftlicher Taschenrechner Batteri ~D~ 9783868142907 | eBay FX-991DEX Casio FX-991DE X Desktop Wissenschaftlicher Taschenrechner Batteri ~D~ 9783868142907 | eBay](https://i.ebayimg.com/images/g/HdUAAOSwyxhfiwnn/s-l500.jpg)
FX-991DEX Casio FX-991DE X Desktop Wissenschaftlicher Taschenrechner Batteri ~D~ 9783868142907 | eBay
![Casio FX-991DE X ClassWiz Scientific Calculator with Natural Display : Amazon.de: Bürobedarf & Schreibwaren Casio FX-991DE X ClassWiz Scientific Calculator with Natural Display : Amazon.de: Bürobedarf & Schreibwaren](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/71C0jxh12hL._AC_SS450_.jpg)