Why does the calculator not display decimal answers and only fractions, and why won't it square numbers that aren't perfect squares

Hello, the sd key will change fractions to decimals and back if needed. The calculator will simplify square roots that are not perfect squares and if you need a decimal answer then press the sd key and if will convert it to a decimal.

Is there a comma separator - thousands function for millions and billions,etc. for example 50,000,000,000?

This is not a business calculator - not sure why you'd want a comma separator when you'd be using scientific notation: 5x10^10 for example.

How is this different than the fx-300ESPLUS2 ?

I am not familiar with the fx-300ESPLU52. You might be able to go to the Casio website to get information on how they are different. This one (the fx-115) has many features which I have not yet used.

can it used in SAT exam?

I'm a retired hs teacher. I've bought this model two times for my own kids because it met their needs and can be used during standardized exams such as the SAT.

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Casio fx-115ESPLUS2 2nd Edition, Advanced Scientific Calculator

Casio fx-115ESPLUS2 2nd Edition, Advanced Scientific Calculator

Product ID: 222497314

Details

Brand
Casio
Calculator Type
Colour
White
Display type
LCD
Material
Plastic
Model name

📐Natural Textbook Display for clear math visuals

🔋Solar-powered with battery backup for nonstop use

🛡️Durable hard case protects on-the-go

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📊 Elevate your calculations—because precision is power.

ECO FRIENDLY POWER - Solar operation with battery backup means you’re always ready, no charging anxiety.
ALL IN ONE MATH MASTERY - From Algebra to Calculus, tackle complex problems with confidence and ease.
RUGGED TRAVEL COMPANION - Protective hard case guards your calculator from daily bumps and drops.
TEXTBOOK PERFECT DISPLAY - See equations exactly as in your textbooks—no guesswork, just clarity.
TRUSTED BY PROS STUDENTS - Join thousands who rely on Casio’s precision for academic and professional success.

The Casio fx-115ESPLUS2 2nd Edition is an advanced scientific calculator featuring a Natural Textbook Display for intuitive math visualization, solar power with battery backup for reliable use, and a protective hard case for durability. Ideal for students and professionals tackling algebra, calculus, statistics, and engineering, it combines precision, convenience, and ruggedness in a sleek, portable design.

Specifications

ASIN	B086Z79HXS
Best Sellers Rank	77,183 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 128 in Scientific Calculators
Brand Name	Casio
Calculator Type	Engineering/Scientific
Colour	White
Customer Reviews	4.8 4.8 out of 5 stars (7,077)
Display Type	LCD
Enclosure Material	Plastic
Global Trade Identification Number	00889232609690
Item Dimensions L x W	22.9L x 14W centimetres
Item Type Name	Scientific Calculator
Item Weight	6.05 Ounces
Manufacturer	CASIO
Manufacturer Part Number	FX-115ESPLS2
Model Name	['FX115ESPLUS']
Model Number	FX-115ESPLS2
Number of Batteries	1 LR44 batteries required. (included)
Power Source	Solar Powered
Screen Size	6.5 Centimetres
UPC	889232609690
Unit Count	1.0 count

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