5/7÷( )=( ) ×5/8=6.7( )=( )×20%=0.15×( )=( )+8/9=1
8:( )=( ):20=5分之4=( )÷30=几分之16.
填空题:8/7×()=()×1-1/2=0.4×()=5/7÷()
(1)计算并观察下列每组算式:8×8=7×9=,5×5=4×6=,12×12=11×13=;
1、7/8-45÷1.2 = = 2、25%×32×125% = = 3、(50%+60%)×5/
5:8=()40:=()%=()/()=()(填小数)
16 :20=( )分之8=0.8=( )÷15= 25分之20
(24+21/4)÷4=?27/5×3/2×25/9=?(8/5+11/3)×88=?4/1
( )÷16=8分之5=( )%=45:( )=( )(填小数)
()÷8=几分之几=15:()=0.75=():12=()%
720×(400÷?)=360 60÷(120÷?)=15 3.75×(?×8/5)=3.75 ÷(4/3÷?)=6/1
( )×3分之8=9分之8÷( )=2分之3-( )=5分之4+( )
5分之1×( )=( )÷4分之7=3分之2+( )=1