disstributive property

Question

For 32 + 40, which of the following shows the correct expression of distributive property using the greatest common factor (GCF)  

a	2 (16 + 20)
b	4 (8 + 10)
c	5 (6+ 8)
d	8 (4 + 5)

Answer 1

First, find the GCF. 8 is the GCF as its the highest choice possible that is a multiple of both 32 and 40. Next, distribute to check your answer. 8 x 4 = 32 and 8 x 5 = 40. D is the correct answer.