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The Casio FX-991CW is a solar-powered advanced scientific calculator featuring a high-resolution 2.25-inch LCD display that supports complex data views like spreadsheets and 4x4 matrices. It offers 552 functions including numeric integration, differentiation, and polynomial solving, with a natural textbook display for intuitive input. Ideal for middle school to college students, it’s a trusted tool for exams such as GCSE and A-level, combining durability with cutting-edge calculation capabilities.












| ASIN | B0BSJ33C4R |
| Best Sellers Rank | 20,236 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 74 in Scientific Calculators |
| Brand Name | Casio |
| Calculator Type | Engineering/Scientific |
| Colour | Black |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,087) |
| Display Type | LCD |
| Enclosure Material | Plastic |
| Item Dimensions L x W | 16.2L x 7.7W centimetres |
| Item Type Name | Casio Advanced Scientific Calculator |
| Item Weight | 3.35 Ounces |
| Manufacturer | Casio |
| Manufacturer Part Number | FX-991EX |
| Model Name | FX-991CW |
| Model Number | FX-991CW |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Power Source | Solar Powered |
| Screen Size | 2.25 Inches |
| UPC | 889232615011 |
| Unit Count | 1.0 count |
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