Python coding challenges: "addition"

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Math & Number Theory easy

Multiply without multiply

Write a function that multiplies two integers using only addition, subtraction, and bit shifts — no * operator.

multiplication bit-manipulation arithmetic

+8 pts 12m

Bit Manipulation easy

Add without plus

Implement a function that adds two integers using only bitwise operations, no arithmetic plus or minus.

bitwise addition xor

+10 pts 15m

Showing 2 challenges · easy

Guide: free Python coding challenges

Practice Python by solving problems

PythonSkillset challenges are hands-on coding exercises from beginner to advanced. Open a challenge, read the problem, write Python in the split-pane editor, and run tests with Pyodide — no install required.

How to use the arena

Pick a category — basics, algorithms, strings, and more
Open a challenge, read the statement, and edit the starter code
Run tests, fix failures, then try a related quiz or tutorial lesson

Challenges vs tutorials and quizzes

Challenges test what you can build under constraints. For guided teaching, use our Python tutorials. For quick checks, try quizzes or copy snippets from code samples.

Python Coding Challenges