0.36×15     1.6×231     7.2×0.15.
分析:小數(shù)乘法的計算方法是:先按照整數(shù)乘法的計算方法算出積,再看因數(shù)中一共有幾位小數(shù),就從積的右邊起數(shù)出幾位,點上小數(shù)點,乘得積的小數(shù)位數(shù)不夠時,要在前面添0補足,再點小數(shù)點.
解答:解:(1)0.36×15=5.4
 0.3 6
×    1 5

 
.
 1 8 0
 3 6

.
 5.4 0
  


(2)1.6×231=369.6
 
 2 3 1
×   1.6

.
 1 3 8 6
 2 3 1

.
 3 6 9.6
  


(3)7.2×0.15=1.08
 
    7.2
×0.1 5

 
.
 3 6 0
 7 2

.
 1.0 8 0
  
點評:本題主要考查了學(xué)生簡算小數(shù)乘法的計算能力,在計算中一定要細(xì)心,注意積的小數(shù)位數(shù).
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