Simple Arithmetic Calculator

Basic Arithmetic Operations:

\[ a + b \] \[ a - b \] \[ a \times b \] \[ a \div b \]

Calculation Result:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is a Simple Calculator?

A simple calculator performs basic arithmetic operations including addition, subtraction, multiplication, and division. It's a fundamental tool for everyday mathematical calculations.

2. How Does the Calculator Work?

The calculator performs the following operations:

\[ a + b \] \[ a - b \] \[ a \times b \] \[ a \div b \]

Where:

\( a \) — First operand
\( b \) — Second operand
\( + \) — Addition operator
\( - \) — Subtraction operator
\( \times \) — Multiplication operator
\( \div \) — Division operator

3. Importance of Basic Arithmetic

Details: Basic arithmetic operations are fundamental to all areas of mathematics and essential for daily life calculations, financial planning, and problem solving.

4. Using the Calculator

Tips: Enter two numbers, select an operation, and click Calculate. For division, ensure the second number is not zero.

5. Frequently Asked Questions (FAQ)

Q1: What happens if I divide by zero?
A: The calculator will return "Undefined (division by zero)" as division by zero is mathematically undefined.

Q2: Can I use decimal numbers?
A: Yes, the calculator accepts decimal numbers with up to 4 decimal places.

Q3: What's the maximum number size?
A: The calculator can handle very large numbers within PHP's float limits (typically up to about 1.8e308).

Q4: Are there more advanced functions?
A: This is a basic calculator. For scientific calculations, consider a scientific calculator.

Q5: Can I use negative numbers?
A: Yes, the calculator handles negative numbers for all operations.