Question

Answer 1

Bài 2:

\(a,4km^2=4000000m^2\\ b,8m^27dm^2=807dm^2\\ c,5m^2=500dm^2\\ d,42m^237dm^2=4237dm^2\\ e,120dm^2=12000cm^2\\ g,10000000m^2=10km^2\) 

Bài 3:

\(a,2km^2=2000000m^2\left[Đ\right]\\ b,7m^24dm^2=740dm^2\left[S\right]\\ c,15000000m^2=150km^2\left[S\right]\\ d,31m^265dm^2=3165dm^2\left[Đ\right]\)