(1-25%)÷(1+1/3) (80%-2/5÷2)×75% 7.2÷(1
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(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%)
(1-25%)÷(1+1/3) (80%-2/5÷2)×75% 7.2÷(1-10%-18%)
(1-25%)÷(1+1/3)
=0.75÷4/3
= 0.5625 (80%-2/5÷2)×75%
=(80%-1/5)x75%
=60%x75%
=0.45
7.2÷(1-10%-18%)
=7.2÷72%
=10
=0.75÷4/3
= 0.5625 (80%-2/5÷2)×75%
=(80%-1/5)x75%
=60%x75%
=0.45
7.2÷(1-10%-18%)
=7.2÷72%
=10
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要过程 (1/2 - 1/3×75%)÷25% 45 - 45÷9/2×12.5% 25÷(
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8分之1÷(2-25%-75%)简便计算
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简算(1+1÷2+1÷3+1÷4)×(1÷2+1÷3+1÷4+1÷5)-(1+1÷2+1÷3+1÷4+1÷5)×(1÷2
1÷(2÷3)÷(3÷4)÷(4÷5)÷……÷(98÷99)÷(99÷100)需要简算,
1÷(2÷3)÷(3÷4)÷(4÷5)÷...÷(2008÷2009)÷(2009÷2010)怎么做
在下面的算式中填上若干个( ),使等式成立:1÷2÷3÷4÷5÷6÷7÷8÷9.
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(2÷3+3÷7+5÷21)÷21分之1÷0.28等于多少?