17×30=?42÷60=?52÷13=?15×0.4=?0.42×3=?2.4×0.6=?0.75÷2.5=?0.32
3 () -- =30÷40=0.75÷0.4=-- =()% 4 36
0.75=( )÷( )=3÷( )
填空题哦,1.12/20=3÷5=()/30=15÷()=()2.21÷42=()÷()=()/()=()/()
( )÷8=( )/( )=15:( )=0.75=( ):12=( )%
15÷()=()分之12=0.75
14.3÷()=0.75
6÷( )=( ):12=( )分之15=0.75=( )%
10.75-(0.75+3.4)=?72÷0.4=?0.28÷0.2=?1÷2/3×3/2=?
(78.6-0.786×2.5+0.75×21.4)÷15×1997=?
12÷3=4;120÷30=4;60÷15=4发现了什么?
( ):20=0.6=15÷( )= ( )%=( )
0.75=()分之15=36分之()=15÷()