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Price: $34.99
(as of Aug 21, 2025 17:18:32 UTC – Details)

From the brand

Scientific Calculators Upgraded 991ES Plus Scientific Calculators Upgraded 991ES Plus

Reliable & Innovative

ROATEE is dedicated to creating high-quality calculators designed to support students and professionals. We focus on providing educational tools that help students achieve excellent results while meeting the practical needs of users. We are committed to sustainability, ensuring that they are not only practical and efficient, but also environmentally responsible.

scientific calculatorscientific calculator

ROATEE Graphing Calculators

Scientific Calculator

Scientific Calculator with pad

Office,School Supplies

Office,School Supplies

Basic Calculator

ROATEEROATEE

ROATEE Scientific Calculator RechargeableROATEE Scientific Calculator Rechargeable

Why Choose Us

Our scientific calculator for school and business intergrates calculation and notebook with a stylus pen. The lcd writing tablet enables you to take notes during the calculation, which do great help for study and work

About Product Quality

The body of this scientific calculator undergoes rigorous quality tests. Due to the design of anti-drop body, no need to worry about the damage by accidentally falling and it has only weighs 5 ounces can be easily put in your pocket, which is convenient for business and school

Go Green Now

Our products are ClimatePartner Carbon Neutral Certified

ROATEE Graphing Scientific Calculators:Fully meets the computing needs of high school students and office use. It has graphics functions, scientific calculation functions and other special functions. It includes 5 calculation modes: COMP, COMPLEX, SD, REG, and BASE-N, and three operation modes (calculation mode, angle measurement mode, and display mode). It has a total of 360 functions,portable and comprehensive and It is a popular back to school supplies at the beginning of the school year
Applicable Courses: This calculator is compatible with most high school courses and exams, including Pre-Algebra, AP Statistics, Algebral, Biology, AlgebrallChemistry, Geometry, Physics, TrigonometryFinance, Calculus, Business, APCalculus,PSAT/NMSQT,SAT,ACTCollegeEntrance Exams,APTesting etc
Flexible Graphics Operations: The calculator supports most of the graphic operations, including Overdrawing Builtin Function Graphs, Specifying Range Parameters Generation Of Function Graphs, Generation of Parametric Graphs, Graph Overdraw, Zoom Function, Trace Function, Draw Operations, Graph Scroll, Single Variable Statistical Graphs, Paired Variable Statistical Graphs, Graph Shift, Graph Change, Graph Solving, etc. It is a professional graphic calculator
Lightweight & Large Screen: This scientific graphing calculator weighs only 129g, about the weight of two eggs, making it easy to carry. The size of 17.5cm/6.8in*8.5cm/3.3in*1.5cm/0.6in makes it more comfortable to hold. It is equipped with a 3” large screen for easy use and demonstration
Anti-Fall Body & Durable: The body of this scientific calculator has undergone rigorous quality testing. Due to the anti-fall body and sliding cover design, there is no need to worry about damage caused by accidental falls, and it is also dustproof

Customers say

Customers find the calculator works great for its intended purpose and appreciate its nice size and slick design. The writing pad is particularly useful for writing down equations, and customers consider it good value for money. The ease of use receives mixed feedback – while some find it easy to read and use, others say it’s extremely cumbersome to operate. The build quality and functionality also get mixed reviews, with some finding it well-made while others report it breaking after a few uses and not working properly.

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