![Amazon.com : CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK Version), Black : Office Products Amazon.com : CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK Version), Black : Office Products](https://m.media-amazon.com/images/I/41HWuPMuG+L.jpg)
Amazon.com : CASIO FX-991EX Advanced Engineering/Scientific Calculator (UK Version), Black : Office Products
![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
![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/BH9vadx.png)
Why does the German version of the Casio fx-991EX, the fx-991DE X, have more functions than the US version? : r/calculators
![Amazon.com: Casio FX-991EX Engineering/Scientific Calculator, Black, 3" x 6.5" x 0.4" : Everything Else Amazon.com: Casio FX-991EX Engineering/Scientific Calculator, Black, 3" x 6.5" x 0.4" : Everything Else](https://m.media-amazon.com/images/I/41D3XXgiqHL._AC_SY580_.jpg)