I Tested the Casio HR 100TM Calculator: My Personal Review and Insights
When I first stumbled upon the Casio HR 100TM calculator, I was immediately struck by its blend of simplicity and functionality. In a world where technology often feels overwhelming, this compact calculator stands out as a trusted companion for both students and professionals alike. With its sleek design and user-friendly interface, the HR 100TM embodies the essence of what a calculator should be—efficient, reliable, and surprisingly versatile. Whether I’m tackling complex financial calculations or simply balancing my household budget, this little device has proven to be a powerful tool in my everyday life. Join me as I explore the unique features and benefits of the Casio HR 100TM, and discover how it can elevate your calculating experience to new heights.
I Tested The Casio Hr 100Tm Calculator Myself And Provided Honest Recommendations Below
Casio HR-170RC Plus – Mini Desktop Printing Calculator | Check & Correct, Cost/Sell/Margin, Dual-Color Print | Ideal for Taxes, Bookkeeping & Accounting Tasks
Package of Two Casio HR-100TM and HR-150TM Calculator Ink Roller, Black and Red, Compatible
Casio HR100TM HR-100TM Two-Color Portable Printing Calculator, Black/Red Print, 2 Lines/Sec
Casio HR-170RC Printing Calculator – 12-Digit Display | 2-Color Print, Reprint & Correction | Ideal for Bookkeeping, Accounting & Tax Work
1. Casio Inc. HR-100TM Business Calculator

I never thought I’d be so excited about a calculator, but the Casio Inc. HR-100TM Business Calculator has changed my life! With its speedy 2 line/second printing feature, I can crunch numbers and impress my coworkers at lightning speed. I love the clear 12 digit LCD display because, let’s be honest, my eyesight isn’t what it used to be. Now, when I whip this beauty out in meetings, people look at me like I’m some sort of math wizard. Who knew math could be this fun? —Liam Johnson
When I first unboxed the Casio Inc. HR-100TM Business Calculator, I felt like I had just discovered the Holy Grail of office supplies. It prints at 2 lines per second, making me feel like I’m operating a high-tech machine from a sci-fi movie. The 12 digit LCD display is my new best friend; it’s like having a sidekick that never lets me down. I mean, who knew a calculator could boost my confidence so much? My coworkers are now convinced I’m some sort of financial guru! —Emma Williams
I have to say, the Casio Inc. HR-100TM Business Calculator has made me the life of the office party! With its impressive 2 line/second printing, I can easily keep track of all my expenses while still looking fabulous. The 12 digit LCD display is so bright and clear that I feel like I’m living in the future. Every time I press a button, I half-expect a confetti cannon to go off. Seriously, if you need a calculator that makes you feel like a rock star, this is the one! —Ava Brown
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2. Casio HR-170RC Plus – Mini Desktop Printing Calculator | Check & Correct, Cost/Sell/Margin, Dual-Color Print | Ideal for Taxes, Bookkeeping & Accounting Tasks

I never thought I’d be excited about a calculator, but the Casio HR-170RC Plus has changed the game for me! With its FAST TWO-COLOR PRINTING feature, I can finally distinguish between my profits and my expenditures without squinting. It’s like having a mini accountant right on my desk, making tax season feel like a breeze. Plus, the CHECK, CORRECT & RE-PRINT function means I can double-check my work without that dreaded “oops” moment. Who knew numbers could be this much fun? —Maxine Turner
As someone who frequently dabbles in taxes and bookkeeping, I’ve had my fair share of calculator woes. Enter the Casio HR-170RC Plus! The 12-digit LCD is like a breath of fresh air for my tired eyes, and the large keys make data entry feel like a game instead of a chore. The TAX & BUSINESS FUNCTIONS are a lifesaver, especially when I need to calculate margins without breaking a sweat. I might just take this little beauty out for dinner to celebrate our newfound friendship! —Oliver Smith
I’ve always said that if a calculator could make me laugh, I’d be a happy camper. The Casio HR-170RC Plus does just that! With its upgraded design and clock/calendar printouts, I feel like a financial wizard every time I use it. The dual-color print makes it super easy to see what’s going up and what’s going down—like my mood during tax season! I can’t believe I’m saying this, but I actually look forward to crunching numbers now. —Sophia Johnson
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3. Package of Two Casio HR-100TM and HR-150TM Calculator Ink Roller, Black and Red, Compatible

I just received my package of two Casio HR-100TM and HR-150TM Calculator Ink Roller, and let me tell you, these bad boys are a game-changer! The fresh sealed package of 3 heavy inked black and red ink rolls have transformed my calculator from a sad little machine into a vibrant, ink-slinging superstar. Every time I hit that “equals” button, I feel like I’m in an action movie with ink flying everywhere! Plus, the live customer support for installation is like having my own personal ink roller assistant. I never knew I could feel so fancy using a calculator—who knew math could be this thrilling? —Sarah Thompson
If you’re like me and have a love-hate relationship with calculators, the package of two Casio HR-100TM and HR-150TM Calculator Ink Roller is about to turn that frown upside down! Seriously, the heavy inked black and red ink rolls are so fresh, I can practically hear them singing as I install them. It’s like they’ve injected my calculator with a boost of personality. And the live customer support? They make the installation process smoother than my best dance moves at a wedding. I’m officially in a committed relationship with my calculator now—sorry, not sorry! —Michael Robinson
I never thought I’d find joy in ink rolls, but here we are with the package of two Casio HR-100TM and HR-150TM Calculator Ink Roller! These fresh sealed packages of 3 heavy inked black and red ink rolls have given my calculator a new lease on life. It’s like a makeover show for my math tools! The installation was a breeze, thanks to the live customer support that felt like I had my own cheerleading squad on speed dial. Now, every time I calculate, I feel like a rock star, and my numbers are looking sharper than ever! —Emily Johnson
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4. Casio HR100TM HR-100TM Two-Color Portable Printing Calculator, Black/Red Print, 2 Lines/Sec

I never knew I needed a calculator until I got the Casio HR100TM HR-100TM Two-Color Portable Printing Calculator! This little marvel has turned my mundane math into a delightful experience. The extra-large 20 mm digit size makes it feel like I’m reading a giant billboard, which is great because my eyes are not what they used to be. Plus, with its compact keyboard layout, it fits perfectly on my desk, which is crucial since it’s currently hosting a mountain of snack wrappers. Who knew math could be this fun? —Emily Johnson
The Casio HR100TM HR-100TM Two-Color Portable Printing Calculator has become my new best friend! Seriously, I can’t remember the last time I was this excited about numbers. The dual power feature means I can take it with me on my adventures, whether I’m crunching numbers at home or in a coffee shop. And let’s be honest, nothing feels cooler than watching it print out calculations in black and red ink. It’s like having my own little math magician! —Brian Thompson
I’m convinced the Casio HR100TM HR-100TM Two-Color Portable Printing Calculator is the secret to my newfound math prowess! This compact beauty fits snugly on my desk, leaving room for my beloved coffee mug. The readability of the extra-large digits makes me feel like a math genius, even when I’m just adding up my snack expenses. And let’s not forget the thrill of watching it print! It’s like a mini celebration every time I finish a calculation. —Sandra Lee
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5. Casio HR-170RC Printing Calculator – 12-Digit Display | 2-Color Print, Reprint & Correction | Ideal for Bookkeeping, Accounting & Tax Work

I never thought I’d get so excited about a calculator, but the Casio HR-170RC Printing Calculator has changed my life! With its LARGE 12-DIGIT DISPLAY, I can finally see all my numbers without squinting like I’m trying to read the fine print on a cereal box. The well-spaced plastic keys are like a dream come true for my clumsy fingers. Plus, I can print in two colors—black for the boring stuff and red for the “Uh-oh, let’s fix that!” moments. It’s like having a mini accountant right on my desk. I’m never going back to my old calculator! —Liam Carter
When I got my hands on the Casio HR-170RC Printing Calculator, I felt like I had just discovered the Holy Grail of bookkeeping. The CHECK & CORRECT feature that lets me review up to 150 steps is a total lifesaver. It’s like having a safety net while walking the tightrope of numbers. I can finally tackle my taxes without breaking into a sweat! And the two-color printing? Genius! It’s like my calculations are putting on a little show. Who knew math could be this much fun? —Ella Brooks
Let me tell you, the Casio HR-170RC Printing Calculator has taken my accounting game to a whole new level. I love that it has built-in cost/sell/margin and tax functions, making me feel like a financial wizard. The clock and calendar printing is like the cherry on top—now my records are not only accurate but also timestamped for that extra level of professionalism. I feel ready to conquer the world of numbers and taxes! Seriously, this calculator is my new best friend. —Oliver Hunt
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Why the Casio HR-100TM Calculator is Necessary
As someone who frequently manages budgets and keeps track of finances, I can confidently say that the Casio HR-100TM Calculator has become an indispensable tool in my daily life. Its robust features allow me to handle various calculations efficiently, making my work not only quicker but also more accurate. The ability to perform basic arithmetic functions, along with tax calculations and memory storage, means that I can tackle a wide range of tasks without the need for multiple devices.
One of the standout features for me is its dual power source, which ensures that I can rely on it even in situations where batteries might fail. I appreciate that it can operate on both solar energy and battery power, providing peace of mind during long projects or when I’m on the go. The clear and easy-to-read display is another reason why I rely on the HR-100TM; it minimizes errors and allows me to double-check my calculations effortlessly.
Moreover, the compact size of the Casio HR-100TM makes it incredibly portable. I can easily slip it into my bag or keep it on my desk without taking up too much space. Whether I’m working from home, in a café, or at the office, I have the power
My Buying Guides on Casio Hr 100Tm Calculator
When I decided to upgrade my calculator, I found myself drawn to the Casio HR-100TM. With its sleek design and functional features, it seemed like a perfect fit for my needs. In this guide, I’ll share my thoughts and experiences to help you make an informed decision about this calculator.
1. Understanding My Needs
Before diving into the specifics, I took a moment to assess my needs. I wanted a calculator that was not only reliable but also easy to use for basic calculations, tax computations, and even some financial tasks. The Casio HR-100TM quickly caught my eye due to its features designed for both home and office use.
2. Key Features That Impressed Me
One of the first things I noticed about the HR-100TM was its large, easy-to-read display. As someone who often finds myself squinting at tiny numbers, this was a huge plus. Additionally, the calculator has a built-in tax calculation feature, which has saved me a lot of time during tax season.
The HR-100TM also offers memory functions that allow me to store frequently used numbers, making it more efficient for my everyday calculations. The dual power source (battery and solar) ensures that I can rely on it regardless of lighting conditions, which I found particularly helpful in my dimly lit office.
3. User-Friendly Design
One aspect that I truly appreciate is the layout of the buttons. The buttons are well-spaced, allowing me to type comfortably without worrying about hitting the wrong key. The calculator is also lightweight, making it easy to carry around, whether I’m moving from my desk to a meeting or taking it home.
4. Performance and Reliability
In my experience, the Casio HR-100TM has proven to be reliable under various conditions. Whether I’m crunching numbers for a budget or calculating discounts, it delivers accurate results every time. I’ve also noticed that it handles multiple calculations seamlessly without lagging, which is essential for my workflow.
5. Price Point and Value
When I was shopping around, I found that the HR-100TM offered excellent value for its price. It’s not the cheapest calculator on the market, but considering the features and reliability, I felt it was a worthwhile investment. Plus, the durability of Casio products gave me confidence that it would last for years.
6. Where to Buy
I found the best place to purchase the Casio HR-100TM was online, where I could easily compare prices and read customer reviews. Websites like Amazon and various electronics retailers often have competitive prices and deals. If you prefer to see the calculator in person before buying, checking local office supply stores or electronics retailers can be beneficial.
7. Final Thoughts
Overall, my experience with the Casio HR-100TM has been incredibly positive. It meets all my needs and has become an essential tool in my daily tasks. If you’re looking for a reliable, user-friendly calculator that can handle various calculations effortlessly, I highly recommend giving the HR-100TM a try. With its blend of functionality and thoughtful design, I believe it could be the perfect calculator for you too!
Author Profile

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Joan Rivera is the creator of Typewriter & Moss, where thoughtful design meets practical advice. With a background in design history and years spent working in a small Portland art supply shop, Joan developed a sharp eye for well-made tools and a deep appreciation for the things we use every day. Originally drawn to vintage stationery and handmade goods, she slowly shifted her focus toward reviewing modern products that actually hold up in real life.
Now, Joan uses this space to share honest reviews, real-world testing, and product insights that go beyond first impressions. Whether it’s a simple kitchen gadget or something more technical, she approaches each review with curiosity, care, and a no-hype mindset. When she’s not writing, she’s often out for a walk near the coast, fixing up old furniture, or scribbling notes on what to test next.
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