Question

(0.5*10^5)^3*(4*10^3)^2如何简便计算,

Answer 1

(0.5*10^5)^3*(4*10^3)^2

=(0.5*10^5)*(0.5*10^5)^2*(4*10^3)^2

=(0.5*10^5)*[(0.5*10^5)*(4*10^3)]^2

=(0.5*10^5)*(2*10^8)^2

=(0.5*10^5)*4*10^16

=0.5*4*10^5*10^16

=2*10^21