bonjour
a) 1.5 cl = 0.015 L = 0.015 dm ³
b ) 1.5 l = 1 500 ml = 1.5 dm ³
c) 30 000 m ³ = 30 dam ³ = 30 000 000 L
5 dl = 0.0005 m³
300 cm ³ = 0.0003 m ³
90 cl = 0.0009 m ³
250 ml = 0.00025 m³
1.5 dm ³ = 0.0015 m ³
0.8 l = 0.0008 m ³
tu peux maintenant les ranger