Sylvia bought 8 tickets to a concert. Each ticket costs $18. To find the total cost in dollars, she added the product 8*10 to the product 8*8, for a total of 144. Which property did Sylvia use?

Sylvia wanted to find the total cost in easier way.

8 x 10 + 8 x 8 = 80 + 64 = 144

She used the Distributive property:

a x (b + c) = a x b + a x c

8 x 18 = 8 x (10 + 8) = 8 x 10 + 8 x 8 = 80 + 64 = 144

Answer:

Distributive property.