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7-86.

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 negative 1, Top blank, Bottom 10.

    −1 + ? = 10

    Diamond Problem Answer. Left 11, Right negative 1, Top negative 11,  Bottom 10

  1. Diamond Problem. Left 5, Right negative 3, Top blank,  Bottom blank

    Diamond Problem Answer. Left 5, Right negative 3, Top negative 15, Bottom 2

  1. Diamond Problem. Left 2 divided by 3, Right blank, Top 1, Bottom blank

    Diamond Problem Answer. Left 2 divided by 3, Right 3 divided by 2, Top 1, Bottom 13 divided by 6

  1. Diamond Problem. Left blank, Right blank, Top negative 14, Bottom negative 5