How to Solve a Triangle (Triazzle) Number Puzzle

You likely mean a Triangle Number Puzzle (sometimes called "Number Triangle" or "Triazzle").

Rule

Each cell = sum of the two cells directly below it.

Solving Steps

1. Start at the bottom row (given numbers).
2. Work upward: Add the two below → write sum above.
3. Deduce: Filled cells may reveal others.
4. Verify: Re-check arithmetic each row.

Example

 ? ? ? 2 3 

Bottom: 2, 3 → above: 5 → top: 5+3=8.

 8 5 3 2 3 

Tips

• Practice builds pattern recognition.
• Use pencil for trial.
• Don't fear erasing.

Share a specific puzzle if you're stuck!