Bài làm : 1 m3 = 1000 dm3 = 1000000 cm3
\(\frac{2}{5}m^3=\frac{2\times1000}{5}=400\left(dm^3\right)\)
\(\frac{5}{3}m^3=\frac{5\times1000000}{3}=\frac{5000000}{3}\left(cm^3\right)\)
Vậy : 2/5 m3 = 400 dm3 ; 5/3 m3 = 5000000/3 cm3
2/5 = 2000/5 , 5/3 = 5000000/3
2/5 m3 = 400 dm3 ; 5/3 m3 = 1666666,667 cm3