Question

tính = cách thuận tiện nhất:

20*190*50

Answer 1

\(\left(20.50\right)190=1000.190=190000\)

Answer 2

20*190*50=(20*50)*190=190000

Answer 3

\(20\times190\times50\\ =\left(20\times50\right)\times190\\ =1000\times190\\ =190000\)