12,20,40,60
()÷20=12/()=24÷()=()%=二成=()折
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():20=12/()=24÷()=()%
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3÷______=______÷24=75%=______折.
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12÷()二0、75二24分之()二():()二()%
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口算.200÷5= 480÷24= 15×6= 160÷40= 12×50= 20×25= 12×5= 320÷80=
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12%=24÷20=( ):25=几分之几=0.12
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(2012•霸州市模拟)______÷20=6÷8=( )24=[24( &
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计算:(1)3-(-8)(2)(-20)÷5(3)(−12)+(−34)+(+134)(4)(-24)÷2×(-3)÷(
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()÷16=():12=75%=()折
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():()=12÷()=()/25=()%=()折=0.8
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30÷12.5÷24的简便运算