Casio FX-991ES Plus-2 Scientific Calculator
- Engineering and scientific calculator, not graphing
- Natural textbook display for roots and fractions
- 1 lithium ion battery, included
- 2 cm LCD screen
- 100 g weight
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A dependable scientific calculator for algebra, physics and engineering coursework that shows fractions and roots the way a textbook prints them. The listing gives almost no function details, so confirm your course requirements first.
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ASIN: B084R2J8PTModel: FX-991ES Plus-2Category: Scientific Calculators
Overview
High school math classes and engineering study desks are where this calculator works, showing roots and fractions in the same layout a textbook uses. It is a battery-powered scientific model with an LCD and a plastic body.
Seeing expressions laid out as they appear in class makes checking work and spotting input errors much easier. The listing is thin on function counts and features, so anyone with a required feature list must check it independently.
Who it's for
Students working through algebra, chemistry and engineering problem sets get textbook-style input and output. Learners whose syllabus calls for graphing or programming should look at a graphing model instead.
Pros and cons
- Natural textbook display for fractions
- Shows roots as written in class
- Light and pocket friendly
- Function count not listed
- No graphing capability
- Solar power not mentioned
Performance notes
Accuracy in daily use comes from entering expressions exactly as they are written, which the natural display supports by showing fractions and radicals stacked rather than on one line. That reduces bracket mistakes, the most common source of wrong answers on a scientific calculator.
Specifications
| Brand | Casio |
|---|---|
| Model | FX-991ES Plus-2 |
| Dimensions & fit | |
| Screen size | 2 centimeters |
| Item weight | 100 g |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Enclosure Material | Plastic |
| Color | Black |
| Other details | |
| Calculator Type | Engineering/scientific |
| Display Type | LCD, natural textbook display |
| Number of Batteries | 1 lithium ion, included |
Frequently asked questions
What does the natural display on the Casio FX-991ES Plus-2 do?
It shows roots, fractions and other expressions the way they appear in a textbook, which makes results easier to read and check.
What battery does the Casio FX-991ES Plus-2 use?
The listing says it needs one lithium ion battery, and the battery is included.