320dm3=m3? 0.1km3=m3? 12 600mm3=m3?

320 dm3 = 320 * 0,001 m3= 0,32 m3 1 km3 = 1* 1000000000 m3 = 1000000000 m3 12600 mm3 = 12600* 0,000000001 m3 = 0,0000126 m3 

320dm3=0,32m3 0,1km3=100000000m3  12600mm3=0,000126m3