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

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

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)