Domino Window

Directions: Use four of these dominoes to form a square with the same number of dots on each side.


What is the largest sum you can make?
What is the smallest sum you can make?


There are two known answers, one where the sum or each side is equal to 13.

Here’s another where the sum of each side is equal to 14.

Source: Joshua Nelson

Print Friendly, PDF & Email

Check Also

Adding Single Digits

Directions: Using the digits 0 to 9 at most one time each, place a digit …


  1. First Grade Enrichment class

    We solved the domino puzzle and got a sum of 14 on each side. We don’t think 11 or 12 are possible. Can you explain?

  2. You are correct, 11 and 12 are not possible. But those are the possible solutions to the other Domino Window task if your students want to give it a try! Thanks for bringing this to my attention!

  3. I came up with 13 and 14.

  4. Your friend who always says I like ur cut G

    I got 13 and 14

  5. Ur friend who always says I like ur cut G

    I got 13 and 14

Leave a Reply

Your email address will not be published. Required fields are marked *