How to Add Two Numbers in Python (original) (raw)

Last Updated : 19 May, 2026

Given two numbers, the task is to add them and display their sum. For Example:

Input: a = 5, b = 7
Output: 12

Let's explore different methods to add two numbers in Python.

Using + Operator

The + operator performs arithmetic addition between two numbers and returns their sum. It is commonly used to add numeric values directly.

Python `

a = 15 b = 12 res = a + b print(res)

The sum() function adds all values present in an iterable like a list or tuple and returns the total sum.

Python `

nums = [10, 5] print(sum(nums))

The operator module provides the add() function, which performs addition between two values similar to the + operator.

Python `

import operator print(operator.add(10, 5))

**Explanation: operator.add() takes two numbers as arguments and returns their sum.

The fsum() function from the math module is used for precise floating-point addition. It helps reduce rounding errors while adding decimal values.

Python `

import math nums = [0.1, 0.2] print(math.fsum(nums))

Output

0.30000000000000004

**Explanation: math.fsum() accurately adds floating-point values present in the list.