Question

0.54x46+5.4x5.4+54`简便计算 急啊 。。。

Answer 1

您好：

0.54x46+5.4x5.4+54`
=0.54x46+0.54x54+0.54x100
=0.54x(46+54+100)
=0.54x200
=108

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追问

能不能讲解下有点不懂

追答

都化成0.54 乘某数，在根据结合律计算

追问

那“0.54x46+0.54x 54 +0.54x100”里这54怎么还有呢，不是都化成0.54吗

追答

对呀 5.4x5.4=0.54x54呀
54=0.54x100 呀

Answer 2

0.54*46+0.54*54+0.54*100=0.54*(46+54+100)=0.54*200=108

Answer 3

0.54x46+5.4x5.4+54
=5.4x4.6+5.4x5.4+54
=5.4×（4.6+5.4）+54
=54+54
=108