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45x2.08+1.5x37.6的简便算法
人气:224 ℃ 时间:2020-02-04 09:44:27
解答
45x2.08+1.5x37.6
=1.5×30×2.08+1.5×37.6
=1.5×62.4+1.5×37.6
=1.5×(62.4+37.6)
=1.5×100
=150
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