Question

4.68×2.73的積是

 

位小數(shù)，0.05×0.6的積是

 

．

Answer 1

考點：小數(shù)乘法

專題：運算順序及法則

分析：根據(jù)小數(shù)乘法的計算法則：先按照整數(shù)乘法的計算法則算出積，再看兩個因數(shù)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．據(jù)此解答．

解答： 解：根據(jù)小數(shù)乘法的計算法則可知：積的小數(shù)位數(shù)等于兩個因數(shù)小數(shù)位數(shù)的和．
所以4.68×2.73的積是四位小數(shù)；
0.05×0.6=0.03
故答案為：四，0.03．

點評：此題考查的目的是掌握小數(shù)乘法的計算法則，明確：積的小數(shù)位數(shù)等于兩個因數(shù)小數(shù)位數(shù)的和．