8÷( )=4/5=( )/20 = 20∶( )=( ) (填小数)8÷( )=4/5=( )/20 = 20∶( )=( )(填小数)

问题描述:

8÷( )=4/5=( )/20 = 20∶( )=( ) (填小数)
8÷( )=4/5=( )/20 = 20∶( )=( )(填小数)

8÷(10)=4/5=(16 )/20 = 20∶(25 )=(0.8 )(填小数)