Question 56687
Solve, show property used(associative, communative, and distributive)and show all steps.

15.) (45•32)•0
45*(32*0)  Associative Property of Multiplication
45*(0)  Zero product property
0  Zero product property
:

17.) 50•(118•20)
50*(20*118)  Commutative of multiplication
(50*20)*118  Associative of multiplication
(1000)*118
118,000


19.)  (25•78)•4
(78*25)*4  commutative property of multiplication
78*(25*4)  associative property of multiplication
78*(100)
7,800
:
Notice these properties made these problems easier and fun to do, rather than a chore.  No calculator or scratch paper is needed.
Happy Calculating!!!