# 10 best scientific calculators 2021 Go for scientific calculator online

- 154 Views
- Nasim
- January 13, 2021
- Electronics and Computer

### Introduction of best scientific calculators

A scientific calculator is handy accessories which have eased people to solve mathematical problems. If you are a student of mathematics then you can use the best scientific calculator for calculus and statistics.

The average person does not have the necessity of scientific calculator. It has been proved that scientific calculator is a necessity for a student or an engineer for which engineering students always search for a best scientific calculator for engineering on the other hand mechanical students always search for a *best scientific calculator for mechanical engineering*.

The person who is involved with the school for them ** best scientific calculator for high school** is available in the market which will help them in calculating the expense and income of the school.

There are various brands scientific calculator available in the market they are Texas, Casio, and these brands are consistently producing **Quality calculator** for many years. If you are a student of the medical profession then also Casio calculator will be pretty useful.

To help you in taking the decision we have listed 10 best scientific calculators for you which covers the **Best budget calculator**, **Cheap calculator, **and **Good calculator**.

**Editors Pick**

Texas TI-30X IIS calculator is most reasonably prices calculator and its a pretty versatile calculator from Texas. It has an impact-resistant cover and it is attached with a quick-reference card which will help you to keep important notes, and the hard plastic, color-coded keys of this calculator will not fade after using it on regular basis. Buyers who have a low budget but wants a versatile calculator they can have this one.

[su_button url="https://www.amazon.com/Texas-Instruments-Scientific-Calculator-Accents/dp/B00000JBNX/?tag=supreme0e3-20" target="blank" style="flat" background="#0080f2" color="#ffffff" size="5" center="yes" radius="5" icon_color="#0b0c0b" rel="nofollow"]Check Price[/su_button]## Comparison table of scientific calculator 2021

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Product Name | Battery | Our Ratings | |

Texas Instruments TI-36X | Solar | 9.8 | [su_button url=”https://www.amazon.com/Texas-Instruments-Engineering-Scientific-Calculator/dp/B004NBZB2Y/?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Casio FX-991EX calculator | Solar | 9.7 | [su_button url=”https://www.amazon.com/dp/B00ZZ93346?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Texas Instruments TI-30X IIS 2 | Solar | 9.6 | [su_button url=”https://www.amazon.com/Texas-Instruments-Scientific-Calculator-Accents/dp/B00000JBNX/?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Hp 35s scientific calculator | Removable | 9.4 | [su_button url=”https://www.amazon.com/HP-F2215AA-ABA-Scientific-Calculator/dp/B000TDRHG8?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Casio fx – 115ES | Solar | 9.3 | [su_button url=”https://www.amazon.com/Casio-fx-115ES-Engineering-Scientific-Calculator/dp/B007W7SGLO?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Texas Instruments TI-84 calculator | Solar | 9.5 | [su_button url=”https://www.amazon.com/dp/B0001EMM0G/?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Sharp Scientific Calculator | Removable | 9.2 | [su_button url=”https://www.amazon.com/gp/product/B004TS0GRG/?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Casio fx-9750 | Removable | 9.1 | [su_button url=”https://www.amazon.com/Casio-fx-9750GII-Graphing-Calculator-White/dp/B00154GSQA?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Hp 12c platinum calculator | Solar | 9.0 | [su_button url=”https://www.amazon.com/HP-MAIN-86591-12C-Platinum-Calculator/dp/B00009WNV9/ref?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

Texas Instruments TI-83 Plus | Removable | 8.9 | [su_button url=”https://www.amazon.com/dp/B00001N2QU?tag=supreme0e3-20″ target=”blank” style=”flat” background=”#0080f2″ color=”#ffffff” size=”5″ center=”yes” radius=”5″ icon_color=”#0b0c0b” rel=”nofollow”]Check Price[/su_button] |

### Features of 10 best scientific calculator 2021

### Texas Instruments TI-36X Review

#### Best rated scientific calculator

- The Texas Instruments TI-36X has a nultiview display which helps to watch multiple calculations and four lines on the screen at the same time.
- The multiview display of this calculator shows multiple calculations at the same time on screen.
- The math print shows math expressions, symbols, and stacked fractions as they appear in textbooks.
- One thing I can say about this calculator that it has got almost zero publicity in the field of a
**Color graphing calculator**battle going on. - You can select the mode menu between various number modes depending on the type of equation you have to enter it can be degrees, floating or radians.
- This solar-powered calculator features the combination of Boolean logic operations for statistical analysis and unit conversions in one sleek package.
- This calculator is usable at high school and college to solve algebra sums, Trigonometry, Geometry, Statistics, calculus biology, etc.
- The TI36Xs scientific calculator has a single-line LCD display which is a little difficult to read when the unit is lying on a desk, and users in need of graphing functions will have to look elsewhere.
- This calculator is backed by one-year limited periods warranty from the date of original purchase.

**What I like about this product **

- Has multiple view display which helps to solve multiple calculations at the same time on screen.
- This scientific calculator is powered by solar batteries.
- It is usable at high school and college to solve algebra sums, Trigonometry, Geometry,
- Backed by a one-year limited period warranty.

**What I miss in this product **

- The arithmetic key of this calculator is not clearly visible.

#### Overall Verdict

The Texas Instruments TI-36X has a multiview display which helps to watch multiple calculations and four lines on the screen at the same time. Texas is a trustable brand that you can trust.

### Casio FX-991EX calculator Review

#### Best scientific calculator for high school

- Casio Fx-991EX comes with an interactive operation. This calculator has easy to use button and this calculator has a textbook type display which allows you to use this calculator very simply.
- The high-resolution display of this calculator helps to view more data like spreadsheets & 4×4 matrix calculations.
- The numbers and symbols of this natural textbook display appear as they just do in textbooks.
- In this calculator, you will have the functions to support a student’s learning from a nursery or school starting time to end of high school and tertiary levels.
- This calculator has a good set of advanced calculations for differential calculus, integration along with vector and inequality calculations.
- This calculator makes the calculation faster as it has simple strokes with visualized formulas.
- It will be the best calculator for you if you have an exam and you have to do lots of calculation because has simple strokes with visualized formulas.
- People can make complex mathematics very simple by using Casio Fx-991EX as this calculator has visualized formulas.
- It is backed by one year of limited period warranty from the date of original purchase.

**What I like about this product**

- It uses a natural textbook display.
- This calculator is backed by two-way power either battery-powered or solar power.
- This calculator has the ability to scan the QR code in real-time graphic representation.
- It has almost 552 functions.

**What I miss in this product **

- After the calculator is turned off it does not store formulas.

#### Overall verdict

It will be the best calculator for you if you have an exam and you have to do lots of calculation because has simple strokes with visualized formulas and this calculator has a textbook type display which allows you to use this calculator very simply.

### Texas Instruments TI-30X IIS 2 Review

#### Best budget scientific calculator

- Texas TI-30X IIS calculator is most reasonably prices calculator and its a pretty versatile calculator from Texas.
- This calculator has a two-line display which shows that it has both entry and calculated results at the same time.
- It has the capability to calculate with both mixed numbers and fractions you can enter fraction during the time when they appear in the textbook for this no conversion is necessary.
- This calculator is run by both solar power band and battery power if enough light is available then it uses the solar battery and when there isn’t enough light it uses internal batteries.
- There are three-angle modes available in this calculator they are radians, degrees, and grads. You can easily handle 1 and 2 variable statistical calculation with the help of this calculator.
- You can notice the front color of this calculator is black and the back cover of this calculator is dark blue-gray.
- This calculator is ideal for solving general math, algebra 1 and 2, prealgebra, statistics, geometry, and general science.
- It will help the students to increase science and math concepts. This calculator shows entries on the top line and results on the bottom line.
- Texas TI-30X IIS calculator is backed by a one-year limited period warranty from the date of original purchase.

**What I like about this product **

- Versatile and reasonable price calculator.
- Two-line display helps to show both entries and calculated result at the same time
- Run by both solar power and internal battery.
- backed by a one-year limited period warranty.
- The calculator has a hard plastic body and color-coded keys.

**What I miss in this product**

- Has limited function.

**Overall verdict **

Texas TI-30X IIS calculator is most reasonably prices calculator and its a pretty versatile calculator from Texas. It has an impact-resistant cover and it is attached with a quick-reference card which will help you to keep important notes, and the hard plastic, color-coded keys of this calculator will not fade after using it on regular basis. Buyers who have a low budget but want a versatile calculator they can have this one.

### Hp 35s scientific calculator Review

#### Best HP scientific calculator

- You will notice most modern Hp calculators are falling into two classes that are ugly and graphing.
- This HP calculator has the look which gives you the feel of a serious calculator. If you are an original Hp user this calculator will give you the feel of a quality product.
- Hp 35s scientific calculator features a large two-line alphanumeric display to view entries, results, menus, and prompts with ease.
- Its robust memory ensures that even the largest calculations go smoothly and quickly.
- Hp 35s scientific calculator is ideal for college students, engineers, surveyors, and medical personnel.
- The robust memory of this calculator ensures that even the most critical calculations should go quickly and smoothly, and this calculator allows more than 800 independent storage registers to store an equation.
- It is programmable a huge positive for those who depend on pre-programming to facilitate everyday calculations or speed up certain test problems.
- This scientific calculator offers calculation versatility in one economical unit.
- The calculator is backed by a one-year limitation period of warranty to the buyers from the date of original purchase.

**What I like about this product**

- Ideal to use both indoors and outdoors.
- It offers calculation versatility in one economical unit.
- Backed by 1 year of limited periods of warranty.
- Most intuitive and user-friendly calculator.

**What I miss in this product **

- The design of this calculator is not up to the mark.

#### Overall Verdict

Hp 35s scientific calculator is ideal for college students, engineers. This HP calculator has the look which gives you the feel of a serious calculator. If you are an original Hp user this calculator will give you the feel of a quality product. It will worth every single price.

### Casio fx 115ES Review

#### Best scientific calculator for students

- This calculator is included more than 280 functions and has 40 metric conversions.
- Casio fx 115es has been designed to be the perfect choice for high school and college students learning general math, Trigonometry, statistics, algebra, calculus, engineering, physics.
- Casio fx 115 es natural textbook display shows expressions and results exactly appear in the textbooks.
- It has a multi-replay function that allows you to backtrack step by step through calculations where you can edit expressions and recalculate answers.
- This scientific calculator is permitted to use on the PSAT/NMSQT, SAT and ACT college entrance exams, AP tests, and NCEES exams.
- This calculator offers you a large multi-line display that allows for multi-replay functionality.
- Its multi-replay function of this calculator helps you to edit your calculation in case you have done some mistakes in your entry.
- Casio’s latest and most advanced scientific calculator features a textbook display that is different from the other and this calculator has an improved math functionality.
- You will get limited periods of warranty for this product from the date of original purchase.

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**What I like about this product**

- It offers a large multi-line display.
- Perfect choice for high school and college students.
- Included more than 280 functions and has 40 metric conversions.
- Its multi-replay function helps to recalculate answers.

**What I miss in this product **

- The warranty period is limited.

#### Overall verdict

This calculator is included more than 280 functions and has 40 metric conversions. It has a multi-replay function that allows you to backtrack step by step through calculations where you can edit expressions and recalculate answers. All these features make this calculator different from the other.

### Texas Instruments TI-84 calculator Review

#### Best cheap scientific calculator

- Texas is a well known and reliable calculator brand. TI 84 is well made and it provides the needs of both professionals and students.
- You can use this calculator to solve engineering-related maths, trigonometry, and calculus.
- This calculator has the capability to handle a simple financial equation too. It also works with tables and graphing and has the capability to turn your number into visuals.
- This calculator has the option of the split screen which helps to shows your graph on one side and the table of your data on the other which helps to analyze graph on an easier way.
- The TI 84 calculator is great for high school math and science. The mathprint technology of this calculator helps to engage students by enabling them to enter fractions and equations in proper notation.
- This calculator has a USB compatible device which helps in sharing between other computer and calculator which is great for presentation.
- It has an option of backup battery which will help you in not to lose any data and it will shut off automatically to save energy.
- With its clear display and fast processing, the calculator incorporates graphing tools for mathematics and science course work, including statistics and finance.
- This calculator is backed by one-year limited periods warranty from the date of original purchase.

**What I like about this product **

- It provides the needs of both professional and students.
- Well, known and reliable calculator brand.
- USB compatible device helps in sharing between other computer and calculator
- Backed by a one-year limited period warranty.

**What I miss in this product **

- Tech support of this calculator is not up to the mark.

#### Overall Verdict

It is a well known and reliable calculator brand. TI 84 is well made and it provides the needs of both professional and students. This calculator has a USB compatible device which helps in sharing between other computer and calculator which is great for presentation. All these features make this calculator different from the other.

### Sharp EL501XBWH calculator Review

- The size of this calculator is great for that you can fit this calculator perfectly on your desk, at work or at home.
- It’s a lightweight calculator for this you can take this calculator anywhere you want.
- This calculator performs 131 essential scientific, math, and statistic functions making it ideal for classes, test taking, and professional use.
- Its large display features 10 digits on one line for easy viewing when completing calculations, using any of the 131 functions available.
- The EL-501XBWH and EL-501XBGR scientific calculator is built to last for years of use.
- The protective hard case enables students to use this calculator from the start of their school career all the way through college.
- This calculator has a big size display which you can easily read and it has a hardcover which will protect your calculator from damage and scratching.
- The protective hard case of this calculator gives durability which helps the students to use this calculator from the beginning of their school days and all the way towards the end of their career.
- The sharp scientific calculator provides one-year limited periods warranty to the buyers from the date of original purchase.

**What I like about this product **

- Battery operated (two LR44) with automatic shut-down
- Has one line display.
- Protective hardcover prevents scratches and dings.
- Has scientific functions.
- It’s perfect for students who are studying pre-algebra, general math, algebra, trigonometry, and geometry.

**What I miss in this product **

The buttons of this calculator are below expectation if you want better button calculator then have **Texas Instruments TI-36X**.

#### Overall Verdict

The size of this calculator is great for that you can fit this calculator perfectly on your desk, at work or at home. The lighter weight of this calculator makes it portable. Its protective guard makes this calculator durable. So if you want a durable calculator then you can have this one for you.

### Casio fx-9750 Review

- The fx-9750GII Graphic Calculator has all the features of functionality which make it a perfect entry-level graphics calculator.
- This calculator features a high-resolution LCD display with enlarging dot areas technology that produces sharp, easy-to-see formulas, statistical data, and graphics which represents to enhance student comprehension.
- It has a high process CPU which will help the students in calculating lengthy calculation and graphs which are a little bit complex.
- The high process CPU will help you to calculate complex math faster than the other calculator.
- This calculator has permission to use on the SAT, PSAT/NMS and ACT college entrance exams and AP tests.
- Casio FX 9750 has a built-in USB functionality which will help you to connect with other devices which make this calculator great.
- The Icon based menu of this calculator helps the student to properly navigate it.
- The soft-menus makes this calculator easy to access functionality for common tasks.
- This calculator is backed by a limited period warranty from the date of original purchase.

**What I like about this product **

- Has all the basic functionality of an entry-level graphing calculator.
- Has a built-in USB functionality which will help you to connect with other devices.
- High process CPU calculates lengthy calculation quickly.
- Icon-based menu of this calculator helps to navigate it properly.

**What I miss in this product **

- No warranty if you want a calculator backed by warranty then have
**Texas TI 84.**

#### Overall Verdict

The fx-9750GII Graphic Calculator has all the features of functionality which make it perfect entry-level graphics calculator. The high process CPU will help you to calculate complex math faster than the other calculator. So if wants a calculator to calculate your problem quickly then it will be the perfect choice for you.

### Hp 12c platinum calculator –

- Hp has taken the industry to the next level. If you are a user of HP 12c calculator then you can notice that it has improved its quality than earlier 12c.
- If you are engaged in work with banking, real estate, and finance then I think 12c calculator will be the perfect choice for you. It is cover with platinum that has 130 built-in functions.
- The 12c platinum calculator includes both RPN and algebraic entry and more power to perform industry-specific calculations with four times more memory.
- Hp 12c platinum calculator includes carrying case and long-life battery which will help in work.
- It is simple, with storage for up to 400 recorded keystrokes which can then be executed with the push of a button.
- With the help of this calculator, you can easily calculate interest rates and conversions, loan payments, standard deviation, percent, TVM, NPV, IRR, cash flows, bonds and more.
- The Platinum is like an old friend that serves well, is solid, dependable and can be counted on to deliver, day-in-and-day-out.
- The new Platinum calculator is a bit faster than the earlier one as it has updated chips which help you to calculate sums quickly than the earlier one.
- The 12c platinum calculator provides 1-year limited periods warranty to the buyers from the date of original purchase.

**What I like about this product**

- Provides 1 years limited periods warranty
- Has long battery life.
- ideal choice for heavy-duty calculations.
- It is simple, with storage for up to 400 recorded keystrokes.

**What I miss in this product **

- I have checked thoroughly still I did not find anything.

#### Overall Verdict

It is the ideal choice for heavy-duty calculations in real estate, banking, and finance. This calculator includes both RPN and algebraic entry. The updated chip of this calculator makes it faster than earlier one. So all these features make it really special from the other calculator.

### Texas Instruments TI-83 Review

- The TI-83 Plus is an easy-to-use graphing calculator for math and science that lets students graph and compare functions, as well as perform data plotting and analysis.
- This calculator has the capability to display graphs and tables on split screen to trace graph while scrolling through table values.
- This graphing calculator handles calculus, engineering, trigonometric, and financial functions.
- Texas Instruments TI-83 has an LCD screen which features 64 x 96-pixel resolution for the clear, readable display.
- The flash ROM memory of this calculator allows students to add and update software application which is really needed.
- The TI-83 Plus has a pragmatic key layout and an easy-to-use graphing interface, with a simple programming language for creating conversion programs.
- The TI-83 is powered by four AAA alkaline batteries and one lithium battery for backup, with an automatic shutoff to save energy.

**What I like about this product **

- Powered by four AAA alkaline batteries.
- Has the capability to display graphs and tables on a split screen.
- Backed by one-year limited periods warranty.
- Flash ROM memory of this calculator allows students to add and update software application.

**What I miss in this product **

- This calculator doesn’t have the space to add the needed updates.

#### Overall verdict

The TI-83 Plus is an easy-to-use graphing calculator for math and science. This calculator can display graphs and tables on a split screen. It is powered by four AAA alkaline batteries and one lithium battery for backup. So all these features make this calculator really special.

**Buyer’s guide of scientific calculator**

### Construction

There is nothing much to say about the construction of a scientific calculator. The body and case cover must be strong enough. If you pick one from a well-known brand you don’t have to worry about the construction quality. Usually, a scientific calculator lasts a long time.

### Purposes

You have to know your purposes as well. I mean if you are a professional you should look whether the function is available that you need. If not you should try another one. For the students, it is extremely important. Not all type of calculators is allowed in all academic examination.

If you are an SAT student you will not be allowed to use a calculator that has QWERTY keyboard and paper type. On the contrary, for A.P statistics you should use TI-83 or TI- 84, for A.P. Calculus it is recommended to use TI-83, TI-84 or TI-86. For A.P. Statistic and Calculus TI-89 and TI-92 is totally banned.

So, before you buy your scientific Calculator, know the purpose and see which type is allowed and which type is banned.

### Budget

The price of a scientific calculator is not that much. It is actually inexpensive. But for the better quality, you have to spend a few bucks more. There are some dishonest people who sell cheap quality calculators at the lowest price range. Don’t get trapped on those craps.

**Uses of ****scientific calculator –**

The first thing you should consider before searching a scientific calculator for you is how you are going to use it. Some of its most common uses are –

- Scientific calculators are mainly used by the students to solve some of the maths formulas which their professor or teacher has them to solve. Sometimes students use a calculator to solve an advanced math problem or it may be a simple solution.
- A businessman can use it to calculate their finances. It can be used in a different field of work and by a different person like engineers architects etc.

**Types of scientific calculator**

**Four function calculator **

Four function calculator is basically planned for grade school students as they will incorporate a handful of functions and capabilities. If you look at the standard of the calculator then you will notice this four-function calculator is pretty much affordable to you. You should not expect to solve any complex calculation, nor you should expect to solve any higher form of problems solving features from this calculator.

**Scientific Calculator **

By watching the name of this calculator you must have guessed that it is a calculator that will solve algebra one and two, Geometry, Math Analysis, and Geometry concepts. This calculator is inbuilt with sin, cos, tan, In, Log, exp, 1/x, NPR, NCR, and many other useful features. This calculator will definitely help you in removing a few steps from the four-function calculator. It shows a scientific calculator is more pricy than the four-function calculator.

**Graphing Calculator**

A graphic calculator is basically used by the 9 graders. Most of the calculators consider it the mandatory one. It is capable of handling Algebra 2, trigonometry, ap statistics and everything that is related to calculus. It is a highly practical calculator that will be used by the many students around all over the world which makes it really a great calculator.

### Conclusion

A calculator is an everyday tool. We actually use a calculator in school, college, university, office and even at home. In order to find normal calculations like Divide, Multiply, Add and Subtract a normal calculator will just fine. But if you want help with the advanced level of mathematics you should purchase one of the **best scientific calculators** immediately.

However, the difference in price between regular or scientific calculator is not that much. So, you can have a scientific calculator instead of a regular calculator. Who knows when you will need it?

Some of the companies are selling the worst products at a cheap price range. Stay away from those. That’s all for now. We will meet again soon with lots of other essential product reviews. Till then keep sharing your views with us. We are always here to listen. While searching for the scientific calculator you can also look into our similar article best dial caliper, best digital caliper, etc.

**Best Scientific Calculator FAQ**

**What is the best scientific calculator?**Texas Instruments TI-84 is a well known and reliable calculator brand. TI 84 is well made and it provides the needs of both professional and students. This calculator has a USB compatible device which helps in sharing between other computer and calculator which is great for presentation. All these features make this calculator different from the other.

**Which scientific calculator is best for engineering?**The TI-83 Plus is an easy-to-use graphing calculator for math and science. This calculator can display graphs and tables on a split screen. It is powered by four AAA alkaline batteries and one lithium battery for backup. So I think Texas TI-83 is the best calculator for engineering.

**What can a scientific calculator do?**Hp 35s scientific calculator is ideal for college students, engineers. This HP calculator has the look which gives you the feel of a serious calculator. If you are an original Hp user this calculator will give you the feel of a quality product. It will worth your every single price.

**What can a scientific calculator do?**The scientific calculator can calculate maths, science, and engineering-related problems. You will find that this calculator has much more buttons than the normal calculators. The normal calculator can calculate only simple maths but it cannot calculate any scientific maths.

**W**

**hat is the best calculator for high school?**Casio fx 115es has been designed to be the perfect choice for high school and college students learning general math, Trigonometry, statistics, algebra, calculus, engineering, physics.