1. What is Addition?

Addition is one of the four basic arithmetic operations that represents combining two or more numbers to find their total sum.

2. How Addition Works

The addition operation follows this formula:

Where:

• \( Number1 \) — First operand
• \( Number2 \) — Second operand
• \( + \) — Addition operator
• \( Result \) — Sum of the two numbers

Explanation: Addition combines quantities to find the total amount.

3. Mathematical Properties

Commutative Property: a + b = b + a
Associative Property: (a + b) + c = a + (b + c)
Identity Property: a + 0 = a

4. Using the Calculator

Instructions: Enter any two numbers in the input fields and click "Calculate" to see their sum.

5. Frequently Asked Questions (FAQ)

Q1: Can I add decimal numbers?
A: Yes, this calculator supports both whole numbers and decimal numbers.

Q2: What is the maximum number of digits?
A: The calculator can handle very large numbers within PHP's floating-point precision limits.

Q3: Can I add negative numbers?
A: Yes, negative numbers are supported. Adding a negative number is equivalent to subtraction.

Q4: How precise are the results?
A: Results are rounded to 4 decimal places for clarity.

Q5: Can I use this for financial calculations?
A: For precise financial calculations, consider using currency-specific calculators that handle rounding rules appropriately.