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7-85.

Copy and complete each of the Diamond Problems below. The pattern used in the Diamond Problems is shown at right.  

Generic Diamond Problem. One number, X, is located on the left side. The second number, Y, is located on the right side.  The bottom number is the sum of the two numbers, X and Y. The top number is the product of the two numbers, X and Y.

  1. Diamond Problem. Left blank, Right blank, Top 13,  Bottom 14

    What are the factors of ?

    The sum of which two factors is ?

    Diamond Problem. Left 1, Right 13, Top 13,  Bottom 14

  1. Diamond Problem. Left blank, Right negative 2, Top 16,  Bottom blank

    What is divided by ?

  1. Diamond Problem. Left blank, Right negative 4.2, Top blank,  Bottom negative 3

    What can you add to to get a sum of ?

  1. Diamond Problem. Left blank, Right blank, Top 0,  Bottom 15

    Since the product is , at least one of the missing numbers must be .

    Diamond Problem. Left 15, Right 0, Top 0,  Bottom 15