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Home > CC3 > Chapter 1 > Lesson 1.1.2 > Problem 1-15

1-15.

Recall the Diamond Problem pattern that you found in problem 1-4, which is represented in the diamond at right. Copy and complete the Diamond Problems below using the same pattern.

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 negative 9, Right negative 5,  Top blank,  Bottom blank

    Multiply the two given numbers together to get the top number. Add the given numbers together to get the bottom number.

    The product of two negative numbers is positive. The sum of two negative numbers is negative.

    Diamond Problem. Left negative 9, Right negative 5,  Top 45,  Bottom negative 14

  1. Diamond Problem. Left 9, Right blank,  Top blank,  Bottom 7

    What added to equals ?

    Diamond Problem. Left 9, Right negative 2,  Top negative 18,  Bottom 7

  1. Diamond Problem. Left blank, Right blank, Top 6,  Bottom 5

    What are the factors of ? Which pair has a sum of ?

    Diamond Problem. Left 2, Right 3,  Top 6,  Bottom 5

  1. Diamond Problem. Left 1 divided by 2,  Right blank, Top blank, Bottom: 4

    Subtract one half from to find the right-side number.

    Diamond Problem. Left 1 divided by 2,  Right 3 and 1 divided by 2, Top 1 and 3 divided by 4,  Bottom 4