Question

to be able to do the problems 5(10+4) mentally, zack does 50+20 instead of 5(14).
zack is using witch of the following properties?
associative
commutative
inverse
distributive

Answer 1

Answer:

70

Step-by-step explanation:

5(10+4) is property which is a(b+c)=axb+axc

so answer will be

5(10+4) = 5×10 + 5x4 = 50 + 20 = 70