Scientific Calculator

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Basic Calculator

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Eco-Friendly and Convenient

Say goodbye to paper sticky notes~
A calculator with a writing pad can replace up to a ton of paper.

Together with ClimatePartner, we are committed to carbon neutrality.


Are you ready to make a positive contribution?

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Adopts Exclusive Patented Design, Unique And Practical

Click the clear button to clear the text, slide the lock button to keep the text, the text is clear and easy to use

★★★★★

Claire

"I just got this calculator with a writing pad, and honestly it’s super practical. I can do quick calculations and jot down notes in one place. It makes studying a lot more efficient😺"

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★★★★★

Asher

"The screen is large and easy to work with — just the right size without being too heavy. It’s smooth to use, and it covers both scientific and graphing calculator functions. Honestly, the value for the price is excellent."

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★★★★★

Hannah

"Does everything I need, works great, doesn’t break the bank — it’s a no-brainer."

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★★★★★

Ethan

"My friends told me to get one, so I get 991ES MAX — it’s actually super cool and works great.Getting the 991EX for my dad on Father’s Day too, and he love it."

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If you have any other questions or suggestions, please contact us

Frequently Asked Questions

How to clear up the writing tablet?

Turn the button to the unlocked position,so you can erase the notes on the screen by pressing the clearbutton.

How do I take out the pen?

The pen is built into the lower left corner of the calculator, and you can slide it out. Please note: To prevent the pen from falling, the calculator pen is designed to be a little tight when you first take it out, so please feel free to use it.

How do I change the setting from fractions to obtain a decimal answer?

You can change there sults through the key'S=D';Or you can configure
calculator setting:
1.Press the button 'SHIFT
2.Press the button 'MODE
3.Choose 1or 2 to set the mode of fraction or decimal.【MthlO for fraction,LinelO for decimal

Why can't the writing be cleared?

Please check that the lock key is in the unlocked state. If the unlock key is in the locked state, the clear key will not be usable. When the unlock key is in the unlocked state, press the clear key (circular or trash can shape) to clear the writing.