Addition: 20 + 5 = 25
Subtraction: 20 - 5 = 15
Multiplication: 20 * 5 = 100
Division: 20 / 5 = 4
Modulus: 20 % 5 = 0
Addition (+): Adds two numbers together.
Subtraction (-): Subtracts the second number from the first number.
Multiplication (*): Multiplies two numbers together.
Division (/): Divides the first number by the second number.
Modulus (%): Gives the remainder after dividing two numbers.