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6.5\4+3.5x0.25简便计算
人气:466 ℃ 时间:2020-03-21 18:15:22
解答
6.5/4+3.5×0.25
=6.5×0.25+3.5×0.25
=(6.5+3.5)×0.25
=10×0.25
=2.5
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