When i use the percentage button, it calculates at a false rate. 100+10%=111.11111 that's what the calculator tells me. how do i fix this?

I also was confused when trying to subtract percentages using the % key. I have never had a calculator function like this and I have had several other Casio models. Can confirm (X x Y% +/-) will get you the correct total "10 x 10% -" will get you 9 as an answer just as "10 x 10% +" will get you 11. Annoying to have to take an extra step, whatever Casio I'm sure you have your reasons.

On this calculator 50-10%=400 and 50+10%=55.55. What am I doing wrong?

To add or subtract a % from a number, using the % key, you first have to multiply the number by the %, then press + or –. Examples: To calculate 50 plus 10%, enter 50 x 10% (answer 5), then press + (answer 55). To calculate 50 minus 10%, enter 50 x 10% (answer 5), then press – (answer 45).

does it have a back button

yES, IT DOES Yes, it does. The BACKSPACE (ERROR CORRECTION) KEY you're looking for is the ARROW directly to the left of the TAX- key. Each press erases the last entered digit so it can then be reentered correctly.

Is this completely flat or is it curved at the top?

The display window is curved at about a 25 degree angle for ea\asy reading.

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Casio Extra Large Display Calculator (Silver Metallic) Parallel Import

Casio Extra Large Display Calculator (Silver Metallic) Parallel Import

Product ID: 732857067

Details

Brand
Casio
Calculator Type
Standard
Color
Silver
Power Source
Solar Powered
Screen Size
3.25

🔆Solar powered for eco-friendly use

🔢Large 8-digit display with 3-digit comma marker

⌨️Key rollover for seamless input

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Description

🔢 Calculate like a pro, shine like silver.

ECO SMART SOLAR POWER - Never worry about batteries again—power up sustainably with solar energy.
SLEEK SILVER METALLIC DESIGN - Elevate your desk aesthetic with a modern, stylish finish that commands attention.
CRYSTAL CLEAR 8 DIGIT DISPLAY - See every number with precision on a large, easy-to-read screen featuring 3-digit comma markers.
VERSATILE FINANCIAL FUNCTIONS - Handle tax, currency conversions, and profit margin calculations with ease—your all-in-one business companion.
EFFORTLESS INPUT WITH KEY ROLLOVER - Type fast and accurately without missed keystrokes—perfect for busy professionals.

The Casio MS-80B is a solar-powered desktop calculator featuring a large 8-digit LCD with 3-digit comma markers, key rollover for smooth input, and essential financial functions including tax and currency calculations. Its sleek silver metallic design and lightweight build make it a stylish and practical choice for professionals seeking reliable, eco-friendly office equipment.

Specifications

ASIN	B003822IRA
Amazon Bestseller	#249,712 in Office Products ( See Top 100 in Office Products ) #300 in Basic Office Calculators #406 in Financial & Business Office Calculators
Brand	Casio
Calculator Type	Standard Function
Color	Silver
Customer Reviews	4.7 4.7 out of 5 stars (13,618)
Display Type	LCD
Enclosure Material	Plastic
Global Trade Identification Number	00079767187385
Item Weight	120 Grams
Manufacturer	CASIO
Mfr Part Number	MS-80B
Model Number	MS-80B
Number of Batteries	1 Product Specific batteries required.
Power Source	Solar Powered
Screen Size	3.25
UPC	079767187385

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 48.70

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Sold byAmazon SpainDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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