  ### Home > AC > Chapter 1 > Lesson 1.2.1 > Problem1-44

1-44.

Copy and complete each of the Diamond Problems below. The pattern used in the Diamond Problems is shown below. 1. 1. 1. 1. 1. 1. 1. 1. Find out what values are missing from the diamond. (Is the $x$-value missing? $y$-value? $xy$ value? $x+y$ value?)

If the $x$ and $y$ value are missing, find what values can equal the top number, and what values equal the bottom number.

If the $xy$ value and the $x+y$ value are missing, use the values you do have (the $x$ value and the $y$ value) and multiply them together for the top value and add them together for the bottom value.

If the $x+y$ value and the $y$ value are missing: To find $y$: Find what number multiplied by $x$ equals the top number. To find $x+y$: Use the $y$ value you found and the $x$ value given and add them together.

If the $xy$ and $y$ value are missing: To find $y$: Use the $x$ value given and the $x+y$ value and subtract the $x$ value from the $x+y$ value. To find $xy$: Use the $y$ value you found and the $x$ value given and multiply.

1. 1. 1. 