Question

38.5×0.73+3.85×2.7用简便运算怎么做？

Answer 1

38.5×0.73+3.85×2.7用简便运算计算如下：
运用乘法分配律：
38.5×0.73+3.85×2.7
=38.5×0.73+38.5×0.1×2.7
=38.5×0.73+38.5×0.27
=38.5×（0.73+0.27）
=38.5×1
=38.5
扩展资料：
乘法分配律：
两个数相加(或相减)再乘另一个数，等于把这个数分别同两个加数（减数）相乘,再把两个积相加（相减），得数不变。
用字母表示：　　
（a+b）× c=a×c+b×c
变式：
（a-b）× c=a×c-b×c

Answer 2

38.5＊0.73+3.85＊2.7
=38.5＊0.73+38.5.0.27
=38.5＊（0.73+0.27）
=38.5

Answer 3

38.5×0.73+3.85×2.7
=38.5×0.73+3.85×10÷10×2.7
=38.5×0.73+38.5×0.27
=38.5×（0.73+0.27）
=38.5×1
=38.5

Answer 4

38.5x0.73+3.85x2.7
＝38.5（0.73+0.1x2.7）
＝38.5（0.73+0.27）
＝38.5x1
＝38.5
其结果等于38.5。

Answer 5

38.5×0.73+3.85×2.7
=38.5×0.73+3.85×10×0.27
=38.5×0.73+38.5×0.27
=38.5×（0.73+0.27）
=38.5×1
=38.5