# Basic Calculator

A basic calculator is a tool that is used to perform basic arithmetic operations, such as addition, subtraction, multiplication, and division. Basic calculators can also be used to calculate more complex expressions, such as percentages and square roots.

## Concepts

The following are some of the basic formulae that are used in calculators:

• Addition: a + b = c Where: a and b are the numbers being added c is the sum of a and b
• Subtraction: a – b = c Where: a is the minuend b is the subtrahend c is the difference of a and b
• Multiplication: a * b = c Where: a and b are the factors c is the product of a and b
• Division: a / b = c Where: a is the dividend b is the divisor c is the quotient of a and b
• Percentage: percentage = (part / whole) * 100 Where: percentage is the percentage of the whole part is the part that is being considered whole is the whole

## Formulae

The following table shows some of the formulae for calculating basic arithmetic operations:

## Benefits

There are many benefits to using a basic calculator. Some of them include:

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Education Quiz

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First step in measurement is:

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What is the name of the famous Greek philosopher who taught Alexander the Great?

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Which branch of mathematics deals with the study of shapes and sizes of objects?

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Who wrote the play "Hamlet"?

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Dr. Luke attends to emotionally disturbed students. Which service is being provided by Dr. Luke?

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When should a teacher and a pupil hold a case conference?

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Which of the following is NOT a 21st-century skill?

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In a class, there are children who usually get out of the social circle. How do you describe these children?

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Who invented the printing press?

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GPA is considered important as it is required for taking admission into the Bachelor's and Master's degree programme. State true or false.

• Convenience: Basic calculators are very convenient to use. They are small, portable, and easy to use.
• Accuracy: Basic calculators are very accurate. They can perform calculations with a high degree of accuracy.
• Speed: Basic calculators can perform calculations very quickly. This can be helpful for solving complex problems or for performing large numbers of calculations.
• Affordability: Basic calculators are very affordable. They can be purchased for a relatively low price.

## Interesting facts

Here are some interesting facts about basic calculators:

• The first mechanical calculator was invented in 1642 by Blaise Pascal.
• The first electronic calculator was invented in 1961 by Jack Kilby.
• The first handheld calculator was invented in 1971 by Texas Instruments.
• Today, basic calculators are used by people all over the world for a variety of purposes, including education, business, and personal use.

## Use cases

Basic calculators are used in various applications, including:

• Education: Basic calculators are used by students of all ages to learn and practice arithmetic operations.
• Business: Basic calculators are used by businesses of all sizes to perform various tasks, such as calculating sales totals, inventory levels, and payroll.
• Personal use: Basic calculators are used by individuals for various personal tasks, such as calculating budgets, grocery bills, and travel expenses.

## References

Here are some scholarly references on basic calculators:

1. Ivor Grattan-Guinness (2015). The History of the Calculator.
2. Willard L. Miranker (1990). The Mathematics of Calculators.
3. David R. Smith (2000). The Science of Calculators.
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