12÷( )=3/5=9:( )=( )/30=(12÷( )=3/5=9:( )=( )/30=( )%

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12÷()=3/5=9:()=()/30=(12÷()=3/5=9:()=()/30=()%12÷()=3/5=9:()=()/30=(12÷(    &nbs

12÷( )=3/5=9:( )=( )/30=(12÷( )=3/5=9:( )=( )/30=( )%
12÷( )=3/5=9:( )=( )/30=(
12÷(            )=3/5=9:(          )=(   )/30=(      )%

12÷( )=3/5=9:( )=( )/30=(12÷( )=3/5=9:( )=( )/30=( )%
20,15,18,60

20,15,18,0.6

12÷( 20 )=3/5=9:( 15)=( 18)/30=( 60 )%

20 15 18 60

20 15 18 60

20,15,18,60

12÷( )=3/5=9:( )=( )/30=(12÷( )=3/5=9:( )=( )/30=( )% 3÷5=( )/20=( )÷30=( )%=9:( ) 4/9÷12=( )3/5÷4/7=( )2÷3=( )6÷2/3=( ) 解方程 5/14X=5/9 X÷2/3=5/8 12/5÷X=3/10解方程 5/14X=5/9 X÷2/3=5/8 12/5÷X=3/10 12/13÷2/5= 81÷9/8= 1÷2/3=12/13÷2/5= 81÷9/8=1÷2/3= 5/12÷1/3= 3/4=()/8=9/()=3÷()=12/() 3÷5=9÷() =()÷35 =18/(3/4=()/8=9/()=3÷()=12/()3÷5=9÷() =()÷35 =18/()=()/40 9分之4÷5分之2= 12÷4分之3= 7/13×26= 36×3/4= 5×3/20= 150×2/15= 600÷1/12= 120÷7/13×26=36×3/4=5×3/20=150×2/15=600÷1/12=120÷1/4=430÷36/43=1605×1/2= 13/11÷26= 5/8×5= 3/2÷2/3= 8/15×9/10= 5/8×4/15=9/10÷12/5= 21×3/35= 45÷9/5×2/81= 9×5/6÷5/12= 30÷2/3÷4/5= 5/9×11/3×1/2= 3/7÷7/13×14/9= 4/7×28÷1/10= 若a÷b=3/8,b-a=12/5,那么b=( ) 26+9= 57-38= 1500-700= 42×2= 99÷3= 770÷7=660÷3= 960÷3= 180÷9= 65+15= 660÷6= 800×2=50÷5= 3×800= 420÷7= 3×220= 480÷4= 58+33=420-20= 93÷3= 880÷4= 1200-200= 11×7= 80-46=0÷51= (5):20=3/4=12÷( )=9:( )=( ):8 A抢答了9题后A答对(5*9-21)/(5+3)=3题?B抢答了12题后B答对(5*12-20)/(5+3)=8题 A(5×9-21)÷(5+3)=(45-21)÷8=24÷8=3应该的答错的;B(5×12-20)÷(5+3)=(60-20)÷8=40÷8=5?这题应该的答错的,是不是, 解方程 X:3/4=12 12/5÷X=3/10 4X-3+9=12 解方程 X:3/4=12 12/5÷X=3/10 4X-3+9=12 根据算式的结果填空.(a,b都是非0自然数)(1) 1/2÷2/a*b/8=9/32a=b=( )(2) a/8÷b/7÷21./32=1若b<8,则a=( ),b=( )(3) a/9÷b÷5/12=2/3若a<10,则a=( ),b=( ) 1+2+3+4+5+6+7+8+9+10÷11÷12×0=? 13分之5÷9=?13分之12÷8=?3÷4分之3=?6÷9分之4=?18÷4分之9=?13分之5÷9=?13分之12÷8=?3÷4分之3=?6÷9分之4=?18÷4分之9=?1÷9分之7=?