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45x2.08+1.5x37.6的简便算法

题目详情
45x2.08+1.5x37.6的简便算法
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答案和解析
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