0.4x4.87x0.25的简便计算

日期:2016-09-22 21:18:24 人气:1

0.4x4.87x0.25的简便计算

0.4x4.87x0.25的简便计算 0.4x4.87x0.25 =4.87X(0.4x0.25) =4.87X0.1 =0.487
    A+
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