Question

用豎式計(jì)算小數(shù)乘法，應(yīng)讓各數(shù)的（　�。�對(duì)齊．

A．首位

B．末位

C．小數(shù)點(diǎn)

D．?dāng)?shù)位對(duì)齊

Answer 1

分析：本題根據(jù)小數(shù)乘法的運(yùn)算法則分析填空即可：
小數(shù)乘法法則：按整數(shù)乘法的法則算出積； 再看因數(shù)中一共有幾位小數(shù)，就從得數(shù)的右邊起數(shù)出幾位，點(diǎn)上小數(shù)點(diǎn)． 得數(shù)的小數(shù)部分末尾有0，一般要把0去掉．

解答：解：根據(jù)小數(shù)乘法的運(yùn)算法則可知，
用豎式計(jì)算小數(shù)乘法，應(yīng)讓各數(shù)的末位對(duì)齊．
故選：B．

點(diǎn)評(píng)：本題重點(diǎn)考查了學(xué)生對(duì)小數(shù)乘法的運(yùn)算法則的理解與應(yīng)用．