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18.4÷0.5+1.84简便计算
人气:209 ℃ 时间:2020-04-14 06:52:50
解答
18.4÷0.5+1.84
=18.4*2+18.4*1/10
=18.4*(2+1/10)
=18.4*21/10
=38.64
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