标题: [数学] 2007-11-21 初预 [打印本页]

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作者: 老猫    时间: 2007-11-22 06:38     标题: 2007-11-21 初预

[attach]92136[/attach].

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作者: duyan    时间: 2007-11-23 00:20

原式＝(1994.5+60/25)*79+3.1*79=(1994.5+2.4+3.1)*79=2000*79=158000.

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