简便方法计算:14.5+6.65*39.9+25.4+2.35*39.9
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/25 13:45:27
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简便方法计算:14.5+6.65*39.9+25.4+2.35*39.9
简便方法计算:14.5+6.65*39.9+25.4+2.35*39.9
简便方法计算:14.5+6.65*39.9+25.4+2.35*39.9
14.5+25.4+(2.35+6.65)*39.9
=39.9+9*39.9
=39.9*(1+9)
=399