Question

筆算小數(shù)加法時(shí)，要把（　�。�對(duì)齊．

A．首位

B．末位

C．小數(shù)點(diǎn)

Answer 1

分析：小數(shù)加法的計(jì)算，先把對(duì)齊小數(shù)點(diǎn)，也就是相同數(shù)位對(duì)齊，然后再進(jìn)一步解答．

解答：解：筆算小數(shù)加法時(shí)，先要把小數(shù)點(diǎn)對(duì)齊，然后再計(jì)算．
故選：C．

點(diǎn)評(píng)：筆算小數(shù)加減法，先把小數(shù)點(diǎn)對(duì)齊，然后再按照整數(shù)加減法的計(jì)算方法進(jìn)行計(jì)算．