4. Arithmetic operators

Arithmetic operators are used with numbers to perform common mathematical operations

Operator	Description	Example
+	Addition	x + y
-	Subtraction	x - y
*	Multiplication	x * y
/	Division	x / y
%	Modulus	x % y
//	Floor division	x // y
**	Exponentiation	x ** y

Modulus gives the remainder from a division.

Floor division rounds down the result from a division to the nearest integer.

Exponentiation raises to a power.

a=9
b=2

print(a + b)
print(a - b)
print(a * b)
print(a / b)
print(a // b)
print(a % b)
print(a ** b)

Basic arithmetic operators: +, -, *, / are used in the same way as with a calculator.

e.g. converting Celsius to Fahrenheit.

celsius_temp = 30
fahrenheit_temp = celsius_temp * 9 / 5 + 32
print(fahrenheit_temp)
# 86.0

The % operator, called mod is used to calculate the remainder when one value is divided by another.

For example: finding out if a number is odd or even.

When dividing an integer by 2, the remainder will be 1 for odd numbers and 0 for even numbers.

number = 3
if number % 2 == 1:
    print(f"The number {number} is odd.")
else:
    print(f"The number {number} is even.")