![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/Wu9vfjF.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 wissenschaftlicher ClassWiz Rechner mit natürlichem Display, Taschenrechner : Amazon.de: Bürobedarf & Schreibwaren Casio FX-991DE X wissenschaftlicher ClassWiz Rechner mit natürlichem Display, Taschenrechner : Amazon.de: Bürobedarf & Schreibwaren](https://m.media-amazon.com/images/I/717uQ1pLt3L._AC_SL1000_.jpg)
Casio FX-991DE X wissenschaftlicher ClassWiz Rechner mit natürlichem Display, Taschenrechner : Amazon.de: Bürobedarf & Schreibwaren
![Amazon.com: Casio FX-991DE X Scientific Calculator with Natural Display (only German Language) : Office Products Amazon.com: Casio FX-991DE X Scientific Calculator with Natural Display (only German Language) : Office Products](https://m.media-amazon.com/images/I/7198lV+ot9L.jpg)
Amazon.com: Casio FX-991DE X Scientific Calculator with Natural Display (only German Language) : Office Products
![Casio FX-991DE X wissenschaftlicher ClassWiz Rechner mit natürlichem Display, Taschenrechner : Amazon.de: Bürobedarf & Schreibwaren Casio FX-991DE X wissenschaftlicher ClassWiz Rechner mit natürlichem Display, Taschenrechner : Amazon.de: Bürobedarf & Schreibwaren](https://m.media-amazon.com/images/I/61zrj5Zu1pL._AC_SL1000_.jpg)