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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📊 Elevate your calculations—because precision never goes out of style.

BUILT TO ENDURE - Robust hard case protects your investment from daily wear and tear—carry it confidently anywhere.
ECO FRIENDLY POWER DUO - Solar power with battery backup ensures your calculator never quits, even in low light.
LIGHTWEIGHT PORTABLE - Slim, featherlight design fits perfectly in your bag or hand, ready for on-the-go problem solving.
VERSATILE MATH MASTERY - Engineered for algebra, calculus, statistics, and beyond—your all-in-one academic sidekick.
CRYSTAL CLEAR CALCULATION DISPLAY - Natural Textbook Display mirrors textbook format for effortless comprehension and error-free work.

The Casio fx-115ESPLUS2 2nd Edition is an advanced scientific calculator featuring a Natural Textbook Display for easy-to-read calculations, solar power with battery backup for reliable use, and a protective hard case to prevent damage. Ideal for professionals and students tackling algebra, calculus, and statistics, it combines durability, portability, and cutting-edge functionality in a sleek, lightweight design.

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Manufacturer	CASIO
Brand	Casio
Model number	FX-115ESPLS2
Product Dimensions	22.86 x 13.97 x 0.25 cm; 104.33 g
Batteries	1 LR44 batteries required. (included)
Color	White
Material Type	Plastic
Number of Drawers	2
Number of Items	1
Size	1"x3.3"x6.5"
Lines Per Page	16
Manufacturer Part Number	FX-115ESPLS2
Item Weight	104 g

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

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