Equation Pyramid
Every block in the pyramid is the sum of the two blocks under it. Find the hidden block and pick its value.
- Math
- New puzzle every day
- Free, plays in your browser
- Mouse or touch
- Added 30 October 2026
- #pyramid
- #addition
- #numberpuzzle
- #dailyquiz
- #maths
- #learning
Equation Pyramid
0% · Getting ready
Loading Equation Pyramid 0%Watch a 20-second trailer
A real run of the game, recorded with captions and no sound.
How to play
- A number pyramid is shown with one block hidden by a question mark.
- Each block is the sum of the two blocks directly under it.
- Work out the hidden number and pick it from four choices.
- Pyramids start with three rows and grow to four. The clock starts on your first tap and your time is saved.
Controls: mouse or touch. Made by CalcoTools.
Tips and strategy
- If the hidden block is on top, add the two blocks below it.
- If it is lower, take the known block above and subtract its neighbour.
- Work from the base up when you can.
- Check your answer by adding it back in.
FAQ
- Is there only one answer?
- Yes. The sums fix the hidden block exactly.
- Can I use subtraction?
- Yes. To find a block, subtract the known block under it from the one above.
- Is the daily the same for everyone?
- Yes, on the same UTC day.
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