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Finding and using a pattern is an important problem-solving skill necessary for your study of mathematics. The patterns in Diamond Problems are used later in the course to solve other types of algebraic problems.

Look for a pattern in the first three diamonds below. For the fourth diamond, explain how to find the missing numbers (?) if you know the two numbers (#).

Copy the Diamond Problems below onto your paper, then use the pattern you discovered to complete each one.

What do you do to each of the (#) numbers to get to the (?) numbers?