Question

給下面各題的積點(diǎn)上小數(shù)點(diǎn)．

Answer 1

分析：列豎式計(jì)算，積的小數(shù)位數(shù)等于兩個(gè)因數(shù)的小數(shù)位數(shù)和，然后再進(jìn)一步解答．

解答：解：據(jù)分析解答如下：

點(diǎn)評(píng)：筆算兩個(gè)小數(shù)相乘，所得的積的小數(shù)位數(shù)，等于兩個(gè)因數(shù)中小數(shù)的位數(shù)之和．