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

€ 228.55

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Description

📚 Ace every exam with the UK’s best-selling scientific calculator!

ROBUST PORTABLE - Slim, lightweight design with a slide-on protective hard cover—built to survive your busiest school days.
TRUSTED UK STANDARD - Approved for all UK exams and recommended for Key Stages 3 & 4, including GCSE and beyond.
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 faster understanding and fewer errors.
ADVANCED FUNCTION ARSENAL - 290+ functions including ratio, statistics, regressions, and digit separators to tackle any problem.

The Casio fx-85GTX is the UK’s top 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 cover, and robust design make it the essential tool for secondary school students aiming to excel.

Specifications

ASIN	B07L68RQCX
Best Sellers Rank	29,377 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 78 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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€ 228.55

Duties & taxes included

In stock

Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Finland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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