Problem of the Week
By Trudy Gau

Problem of the Week
By Trudy Gau
Congratulations to Evie N, Abby S and Aiden B, who were our winners last week.
Rule: Add the two numbers below to find the number above.


Complete the tower by filling in the gaps.
Challenge: Change one number on the bottom row so the top number becomes 25.
Rule: Add the two numbers below.
Find the missing numbers to complete the tower.


Rule: Add the two numbers below.
Create a number tower that meets these conditions:


Challenge: Find at least three different solutions. What patterns do you notice?
Is there more than one possible solution? Explain how you know.