1. What is This Calculator?

This is a simple addition calculator that computes the sum of two numbers, similar to the basic function of the Windows calculator.

2. How Does the Calculator Work?

The calculator uses the basic addition formula:

Where:

• \( a \) — First number
• \( b \) — Second number

3. Importance of Addition

Details: Addition is one of the four basic operations of arithmetic and is fundamental to mathematics and daily calculations.

4. Using the Calculator

Tips: Enter any two numbers (positive or negative, whole numbers or decimals) and click Calculate to get their sum.

5. Frequently Asked Questions (FAQ)

Q1: What is the maximum number I can enter?
A: The calculator can handle very large numbers, limited only by PHP's floating-point precision.

Q2: Does it work with decimal numbers?
A: Yes, you can enter numbers with decimal points (e.g., 3.14 + 2.86 = 6.00).

Q3: Can I add negative numbers?
A: Yes, the calculator handles negative numbers (e.g., -5 + 3 = -2).

Q4: How precise are the results?
A: Results are rounded to 2 decimal places for readability.

Q5: Can I add more than two numbers?
A: This version only adds two numbers at a time. For multiple numbers, perform calculations sequentially.