Arithmetic Operations

Arithmetic operations are essential in any programming language. Python provides various operators to perform calculations.

Basic Arithmetic Operators

Python supports the following arithmetic operations:

Operator	Symbol	Example	Description
Addition	`+`	`10 + 5`	Adds two numbers
Subtraction	`-`	`10 - 5`	Subtracts second number from first
Multiplication	`*`	`10 * 5`	Multiplies two numbers
Division	`/`	`10 / 5`	Returns a floating-point division result
Floor Division	`//`	`10 // 3`	Returns the quotient without the remainder
Modulus	`%`	`10 % 3`	Returns the remainder of division
Exponentiation	`**`	`2 ** 3`	Raises a number to a power

Examples of Arithmetic Operations

a = 10  
b = 3  

print("Addition:", a + b)  # 13  
print("Subtraction:", a - b)  # 7  
print("Multiplication:", a * b)  # 30  
print("Division:", a / b)  # 3.3333  
print("Floor Division:", a // b)  # 3  
print("Modulus:", a % b)  # 1  
print("Exponentiation:", a ** b)  # 1000

Order of Operations (PEMDAS Rule)

Python follows PEMDAS (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction) for evaluating expressions.

Example:

result = 5 + 2 * 3  
print(result)  # Output: 11 (Multiplication first)  

result = (5 + 2) * 3  
print(result)  # Output: 21 (Parentheses first)

Using Arithmetic Operators with Different Data Types

print(10 + 3.5)  # Output: 13.5 (int + float = float)  
print("Hello" * 3)  # Output: HelloHelloHello (String repetition)

Exercise: Try It Yourself!

Calculate 15 % 4 and print the result.
Compute (8 + 2) ** 2 / 5 and print the result.
Multiply "Python" by 3 and print the result.
Predict and print the output of 7 // 2.

Python Basics

Course by zooboole,

Last Updated on 2025-02-26 16:14:49