Section 1.3. Problem Solving. Steps to world problem solving process. Understand the Problem Devise a plan Carry out the plan Look back MAKE SURE YOU ANSWER THE QUESTION. Understand the problem. Understand? Enough info. Devise a plan. Guess and test Look for pattern Use algebra
An array of nine dots is arranged in a 3 x 3 square as shown below. Join the dots with exactly four straight lines segments. You are not allowed to pick up your pencil from the paper and may not trace over a segment that has already been drawn.
Through trial and error with different attempts such as
We find an answer is
Two currently minted United States coins together have a total value of $0.30. One is not a quarter. What are the two coins?
This involves a “catch.” The two coins are a quarter and a nickel. Note that one of the coins is not a quarter, it is a nickel.
Find a positive natural number that satisfies the equation below.
Try this by guess and check:
x = 16 satisfies the equation.