What does the screen on top of the calvulator do?

That is the solar panel which converts solar radiation (light) to electricity, to power the calculator. There are two almost identical models, this one with the solar panel and another which runs on batteries. Note you only get a basic instruction booklet, the full manual has to be downloaded from the casio web site.

Where is the “SD” button on the new version of this calculator?

Use the key to enter the SD Mode when you want to perform statistical calculations using standard deviation. In the SD Mode and REG Mode, the key operates as the key. Always start data input with (CLR) (Scl) to clear statistical memory.

My previous casio calculator had an arrow button to delete just the last digit typed-can this calculator delete one number without using the c or ac

On this Casio calculator there is a DEL button to do the same function you are describing, very easy!!

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Casio fx-85GTX Scientific Calculator, Black

Product ID: 100576226

Details

Brand
Casio
Calculator Type
Financial
Colour
Black
Compatible devices
alle Ger te
Display type
LCD
Material
Plastic

📊290+ advanced scientific & statistical functions

📐Natural textbook display for easy comprehension

🔋Dual-powered solar + battery backup

NZ$349

Duties & taxes included

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📈 Elevate your calculations, dominate your exams!

SLEEK PROTECTIVE - Slide-on hard cover keeps your calculator pristine and professional on the go.
TRUSTED UK STANDARD - Approved for all UK exams and recommended for Key Stages 3 & 4 — join thousands of top students who rely on it.
EXAM READY POWERHOUSE - Dual solar and battery power ensures uninterrupted performance during critical exams.
TEXTBOOK PERFECT DISPLAY - Natural textbook display mirrors your study materials for instant clarity and faster learning.
ADVANCED FUNCTION ARSENAL - 290+ functions including ratio, statistics, regressions, and digit separators to tackle any problem.

The Casio fx-85GTX is the UK’s best-selling dual-powered scientific calculator, featuring a high-definition natural textbook display and over 290 advanced functions. Approved for all UK exams and recommended for Key Stages 3 and 4, it combines solar power with battery backup for reliable use. Its intuitive menu, protective slide cover, and comprehensive statistical tools make it the essential companion for secondary education success.

Specifications

ASIN	B07L68RQCX
Best Sellers Rank	23,162 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 75 in Scientific Calculators
Box Contents	Lithium Metal batteries
Brand Name	Casio
Calculator Type	Engineering/Scientific, Financial
Colour	Black
Compatible Devices	alle Ger te
Customer Reviews	4.7 4.7 out of 5 stars (12,234)
Display Type	LCD
Enclosure Material	Plastic
Global Trade Identification Number	04549526607844
Item Dimensions L x W	16.6L x 7.7W centimetres
Item Type Name	Scientific Calculator
Item Weight	0.18 Kilograms
Manufacturer	Casio
Manufacturer Contact Information	Unit 6 1000 Nth Circular Rd London Nw2 7Jd
Manufacturer Part Number	fx-85GTX
Model Name	fx-85GTX Scientific Calculator
Model Number	fx-85GTX
Number of Batteries	1 Lithium Metal batteries required. (included)
Number of Items	1
Number of Packs	1
Power Source	Battery Powered
Product Warranty	3 year manufacturer
Unit Count	1.0 count

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