Casio FX-991EX FX991ex FX 991ex Scientific Calculator Classwiz scientific calculator black | Shopee Philippines
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Casio FX-991EX Scientific Calculator FX 991 EX with Slide-on Hard Case~BRAND NEW 809787035195 | eBay
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Casio FX-991EX Scientific Calculator FX 991 EX Classwiz 552 function New in Box 4971850092315 | eBay
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Calculator scientific Casio fx 991ex classwiz with solar battery, non programmable with 552 function integration|Calculators| - AliExpress
![Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators](https://preview.redd.it/cai3l1p9lr461.jpg?width=640&crop=smart&auto=webp&s=c0da4846a6c6353535a970b59c39cd63b5556a74)