作业帮27.8乘0.25+71.2乘5.64+5.64简便计算
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/08 16:54:23
27.8乘0.25+71.2乘5.64+5.64简便计算
27.8乘0.25+71.2乘5.64+5.64
简便计算
27.8乘0.25+71.2乘5.64+5.64简便计算
27.8*0.25+71.2*5.64+5.64
=27.8*0.25+5.64*(71.2+1)
=27.8*0.25+72.2*5.64
=27.8*0.25+72.2*(0.25+5.39)
=27.8*0.25+72.2*0.25+72.2*5.39
=0.25*100+72.2*5.39
=25+389.158
=414.158
27.8乘0.25=6.95
71.2乘5.64=401.568
即27.8乘0.25+71.2乘5.64+5.64=6.95+401.568+5.64=414.158
27.8乘0.25+71.2乘5.64+5.64
=27.8*0.25+71.2*5.64+5.64
=27.8*0.25+5.64*(71.2+1)
=27.8*0.25+5.64*72.2
=56.4*0.125+5.64*72.2
=5.64*1.25+5.64*72.2
=5.64*(1.25+72.2)
=5.64*73.45
=414.258
不知道这是不是最简单的.试下
27.8*0.25+71.2*5.64+5.64
＝27.8*0.25+（71.2*5.64+1*5.64）
＝27.8*0.25+72.2*5.64
＝...
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