⒈ ( )∶20 = 24∶( )= ( )分之12 = 0.8 = ( )%

问题描述:

⒈ ( )∶20 = 24∶( )= ( )分之12 = 0.8 = ( )%

⒈ (16)∶20 = 24∶(30)= (15)分之12 = 0.8 = (80)%