CPM Homework Help : CC3 Problem 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.

Hint 1 (a):
Multiply the two given numbers together to get the top number. Add the given numbers together to get the bottom number.
Hint 2 (a):
The product of two negative numbers is positive. The sum of two negative numbers is negative.
Answer (a):

Hint (b):
What added to $9$ equals $7$ ?
Answer (b):

Hint (c):
What are the factors of $6$ ? Which pair has a sum of $5$ ?
Answer (c):

Hint (d):
Subtract one half from $4$ to find the right-side number.
Answer (d):