( )除以30=4:( )=( )(填成数)=( )(填折数)=( )%

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( )除以30=4:( )=( )(填成数)=( )(填折数)=( )%
( )除以30=4:( )=( )(填成数)=( )(填折数)=( )%

( )除以30=4:( )=( )(填成数)=( )(填折数)=( )%
(24 )除以30=4:(5 )=( 8成)(填成数)=(8折 )(填折数)=(80 )%

(24 )除以30=4:(5 )=( 8成)(填成数)=(8折 )(填折数)=(80 )%

6/30=4:20=二成=二折=20%

120除以30=4:3=1有1/3=33.33%