(80%+25%)÷(7÷3)+0.7=?
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(80%+25%)÷(7÷3)+0.7=?
方程0.7(5÷8)+X(3÷8)-0.8=0.8×25%
3.在横线上填上适当的数320÷80=(320÷【】)÷(80÷10)=( )÷8=( )200÷25=(200×【】)÷(25×4)=( )÷100=( )
(19-57 ÷80)÷19+7÷80
14:()=()/3÷0.7=7÷()=()%填空
(12/7-3/14÷0.75)÷25/49
判断题:4.4÷0.7=44÷7=6……0.2( )
25%=()÷80=80:()=()(填小数)=3/8×().
3x÷2=(x+7)÷3
7142.85÷3.7÷2.7×1.7×0.7=(要巧算)
(1-25%)÷(1+1/3) (80%-2/5÷2)×75% 7.2÷(1(1-25%)÷(1+1/3) (80%-2/5÷2)×75% 7.2÷(1-10%-18%)
利用商不变的性质简算560÷35 3.9÷26 2.87÷0.25=560÷(5×7) =3.9÷( )÷( )= ÷(0.25×4)=560÷7 = = = = =
( )÷3=54÷9 28÷7=4÷( ) ( )÷3=54÷9
80÷1.5x-80÷(80-x)=1/3
(x-7)÷3=2.4
2/7÷1/7—1/5×1/3=?(3/4+3/7-1/2)÷1/28=?51×8/25-8/2/7÷1/7—1/5×1/3=?(3/4+3/7-1/2)÷1/28=?51×8/25-8/25=?8/3÷4/9-7/6-5/6=?
1-1/8÷3/8( )7/11÷14 ( )3/8*4/9( )1÷25 %( )9/7÷3( )10%*5*100%( )21*(2/3-1/7)=( ) 4-11/13÷11/13( )2/3*3/10÷2/3×3/10( )(急)
判断题 6/7÷3=(6÷3)/7=2/7( )