Mr. Pen- Standard Function Calculator, 12 Digits,
$5.85
Price: $5.85
(as of Feb 26, 2025 19:10:08 UTC – Details)
From the brand
School & Office Supplies
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Welcome to Mr. Pen!
Having firsthand experience teaching in at-risk schools in different parts of the United States, seeing the daily struggles of students and teachers, we, a few business-minded teachers, founded Mr. Pen with a simple purpose: serving the schools in our community by providing them with high quality and affordable school supplies and tools to help them in their efforts.
Our Goal:
We founded Mr. Pen with a simple purpose to serve the schools in our community by providing them with high quality and affordable school supplies and tools to help them in their efforts.
We want to ensure Mr. Pen can provide superior quality, the most affordable products, and amazing online shopping experience from the beginning.
As we aim to supply excellent conventional office and school products, our team of engineers and designers will do their best job to create innovative solutions for offices and schools to maximize efficiency and learning.
Mr. Pen standard function calculator is made of a sturdy and premium plastic body, and it is convenient, powerful, and long-lasting.
A big LCD screen that displays big numbers makes it easy to read from afar, and aesthetically pleasing.
This calculator’s responsive buttons will make the calculation process faster and smoother. Once pressed, the buttons quickly register and display the corresponding number on the screen. The big size of the buttons prevents you from hitting the wrong button.
This calculator utilizes both solar power and battery power. As long as you use it in a lit environment, the solar panel will power up the calculator thoroughly.
Mr. Pen standard function calculator is designed for many occasions: business, office, home, basic budgeting, school, and more. Use it to assist your personal finance or just for a quick calculation session.
Gio –
Surprisingly Sweet
I am taking a microbiology class and needed a calculator that I would be okay getting E. Coli on. My other qualifier is that it had to be in my favorite color. I was surprised that this came packaged with a handwritten note thanking me for my purchase. That’s classic.It’s what you would expect from a simple, solar-powered calculator.Cute, compact, and inexpensive just in case anything unsavory drips onto it.I was a little confused that the commas were at the top of the numbers rather than at the bottom but that doesn’t bother me at all.Recommended for simple quick maths.
Arissa Ryback –
5 stars for the price
The buttons wiggle a little but for the price, it’s functions perfectly fine. I got it just for test taking and it sits in a pocket of my backpack and has held up very well
M. Anderson –
Simple calculator that works but also comes apart easily
The calculator is a convenient size and worked right away out of the box. Perfect for simple math functions.Note: anyone using this with students or curious populations, the device can come apart easily. I teach in an alternative school and one student dismantled the calculator within a few minutes and removed the metal cover. I’ve not had that problem with other plastic calculators.
Irene B. –
Nice Basic Calculator
A great basic calculator with a nice color. Perfect for back to school and a great price.
Sam Chap –
Works great
Product came exactly as specified and works great with no problems. I use mine quite frequently every week and it has never had an issue
Gav –
Defective
Besides buttons being in the wrong spot works pretty well.
Kevin –
Small Calculator
Seems like a decent pocket calculator. Purchased to keep one in my book bag and one in the car for when I go grocery shopping to prevent overspending on the ol’ budget. I would purchase again.
K. Monahan –
12-Digit Pocket Size
What a find! A 12-digiit calculator that’s pocket-sized! And with a backspace key, that makes error correction easy! The price was also terrific. I also liked the color (blue). The 12 digits span the whole width of the display, unlike in most calculators, where there’s a blank space on the left side. There was one minor flaw, though, both the “AC” key and the “C” key were labelled “AC,” unlike in the photo, although they function properly.
2eBlue –
A very cute colour. Easy to see on a desk or in a drawer. It’sca bit smaller than I’d lije but I could use the buttons snd read it in natural light from the window. The price is appropriate for its design and use
Keeley –
This lil calculator is the perfect size, and it came with a handwritten thank-you note and a mustache sticker. So cute and thoughtful!
Abhishek –
As a person who is going back to school and has reluctantly bought this calculator – there is some things I must inform you about. First of all, yes – this calculator is significantly lightweight and is definitely the stereotypical ‘pocket-calculator’. It is ideal for going to school as it is small and can fit in about any pencil case. It works fines as well, and has a convenient ‘backspace’ button located on the top right of the calculator. In addition to that, it is aesthetically pleasing and you are getting exactly what you are being advertised for. However, something that I found intriguing (in a negative way) was how it doesn’t have ‘Turn off’ button.. I thought that was a basic feature that any calculator would have had. This means you have to completely rely on the calculator switching off itself, and for me this took about 8 or so minutes. The problem here that we are facing now, is the fact it is wasting unnecessary energy and battery. Also maybe it is just me but it has chipped corners in the or it might as well be glue. Not sure of that but it definitely is not plain. Nevertheless, it is quite a sufficient calculator, just if you don’t mind those ‘errors’ and also, just for you to know – this calculator also works indoor – it does not require full healthy sunlight. Anyways, overall rating – 8/10
Leah V Williams –
A great calculator for my daughter’s school needs. The handwritten note from the seller was a perfect touch.
Brianna H –
Works fine initially but broke rather quickly.