1/( )=4/( )=0.25=( )/12=( )/12=6/( )
0.25=4分之几=6÷()=12()=()%
():20=12分之()=4÷()=0.25=():()
1 约等于( )除以4=( )/12=9:( )=百分之几=0.25
0.25=4分之1=25%=2/8=( )/16=3:12
():4=多少分之12=0.25=15除()=()填整数
12除()= ()之3=0.25=20分之() =4分之()
0.25=几分之1=2÷( )=( )比12=( )%.
4除以3=():6=12:()=():12=()分之36
4÷3=( ):6=12:( )=( ):12=( )分之36
0.25=( )分之1=( )%=2÷( )=( )÷16=( ):12
0.25=()分之1=()%=2除()=()除16=():12
5:( )=20 ( ):12=0.25 9:( )=1/3