### Home > CCA > Chapter 1 > Lesson 1.1.2 > Problem 1-15

1-15.

Finding and using a pattern is an important problem-solving skill you will use in algebra. The patterns in Diamond Problems will be used later in the course to solve other types of algebraic problems. Homework Help ✎

Look for a pattern in the first three diamonds below. For the fourth diamond, explain how you could 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?

See the diamonds below. In the example diamonds, notice how one row added

together equals the bottom number, while that row multiplied equals the top number.