Casio fx-260SOLARII 1-Line Scientific Calculator - Solar Powered
Casio fx-260SOLARII 1-Line Scientific Calculator - Solar Powered
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In this review of the Casio fx-260SOLARII the bottom line is simple: this is a compact, budget-minded scientific calculator best suited to students and classroom use who need reliable basic scientific functions without fuss. The single biggest reason to buy is its solar power and simple 10+2 digit LCD that keeps it running in bright environments, so users do not have to worry about replacing batteries during tests or daily study. The reviewer found it straightforward to read and operate for algebra, trigonometry and basic statistics.
Key Features
- Solar powered: Runs from ambient light so students can avoid battery changes and keep the calculator available during long study sessions and exam days.
- 10+2 digit LCD display: A clear single-line display that makes numeric entry and results easy to scan in classroom lighting.
- Fraction calculations: Handles fraction entry and conversions which speeds up work on rational-number problems and homework.
- Trigonometry functions: Includes sine, cosine and tangent functions that cover standard trig needs for geometry and precalculus.
- Logarithms and exponents: Provides log and exponent keys useful for algebra, chemistry basics and logarithmic operations.
- Standard deviation: Offers basic statistical functions so students can quickly compute mean and spread for simple data sets.
Who It's For
The Casio fx-260SOLARII is aimed at high school and early college students who need a permitted scientific calculator for tests such as AP, SAT, PSAT, ACT and NMSQT, or for regular classroom assignments. Its compact size and straightforward layout suit learners who prefer a no-frills device that focuses on core scientific functions like fractions, trig and logs.
It is not intended for users who require graphing capabilities, multi-line algebraic displays, programmable functions or advanced statistics beyond basic standard deviation. Professionals or advanced STEM students who rely on multi-line symbolic work should look for a higher-end model with expanded display and memory.
Pros & Cons
Pros
- Solar power keeps the calculator usable without battery swaps, reducing interruptions during classes and tests.
- Simple one-line 10+2 digit display is easy to read and minimizes learning curve for new users.
- Compact and pocket-friendly design that students report fits in shirt pockets and backpacks comfortably.
- Good value as a budget scientific calculator that covers fractions, logs, exponents and trig functions.
Cons
- One-line display limits visibility of multi-step expressions compared with multi-line models, which can slow complex problem entry.
- Some customers report mixed impressions on power description and accuracy expectations, so be sure to confirm solar performance for your lighting conditions.
Specifications
| Brand | Casio |
| Model | fx-260SOLARII |
| Display | 10+2 digit 1-line LCD |
| Power | Solar powered |
| Functions | Fraction calculations, trig, logarithms, exponents, standard deviation |
| Exam Permitted | AP, SAT, PSAT, ACT, NMSQT |
Our Verdict
The Casio fx-260SOLARII is a practical, low-cost scientific calculator that performs the basics well and is a sensible buy for students who need an exam-permitted, solar-powered device. Its clear display and essential functions offer reliable value for classroom work and test days, though users needing advanced or multi-line features should consider higher-end alternatives.
Frequently Asked Questions
Is this calculator allowed on standardized tests?
Yes, the fx-260SOLARII is listed as permitted for AP, SAT, PSAT, ACT and NMSQT exams.
Does it need batteries?
The calculator is solar powered and intended to run on ambient light, so it generally does not require user-replaceable batteries under normal lighting conditions.
Can it handle statistical functions?
It offers basic statistics such as standard deviation and mean for simple data sets, but not advanced statistical analysis.
Editor's Take
The Casio fx-260SOLARII is a compact, solar-powered scientific calculator that delivers reliable basics-fractions, trig, logs and simple statistics-at a strong value for students and exam use.

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