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1.26*0.25+8.74*4/1 用简便方法计算
人气:449 ℃ 时间:2020-04-11 05:53:07
解答
1.26*0.25+8.74*1/4
=1.26*0.25+8.74*0.25
=(1.26+8.74)*0.25
=10*0.25
=2.5
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