Q: Suppose you want to cut a circular cake with five straight cuts. What is the maximum number of pieces you can create? They can be different sizes but cannot be moved around.
A: 16 pieces…see below for a possible solution
Q: A mother told her daughter “I was thrice as old as you two years ago. In 14 years, I will be twice as old as you.” What is the current age of the mother and daughter?
A: The mother is 50 and the daughter is 18.
Two years ago, they were 48 and 16.
In 14 years, they will be 64 and 32.
Here is a link to a solution on YouTube: https://youtu.be/_RWsx9gU_XI
A: 454585
The first two digits are the product of 9 x 5
The third and 4th digits are the product of 9 x (the other 5)
The 5th and 6th digits are 45 + 45 – middle digit = 90 – 5 = 85
Q: You are painting a square wall that is 12 feet by 12 feet.
When you are halfway done, the unpainted part of the wall is still a square that measures 12 feet from top to bottom by 12 feet from side to side. How is this possible?
A: A: It’s a square within a square. The unpainted square is nested within the larger square like this:
Math Confidence by Robin the Math Lady 