Question

3．計(jì)算小數(shù)加、減法，先把各數(shù)的小數(shù)點(diǎn)對(duì)齊，再按照整數(shù)加、減法法則進(jìn)行計(jì)算，得數(shù)里的小數(shù)點(diǎn)要和橫線上面的小數(shù)點(diǎn)對(duì)齊．

Answer 1

分析 根據(jù)小數(shù)加減法的計(jì)算法則（計(jì)算小數(shù)加減法，先把這個(gè)數(shù)的小數(shù)點(diǎn)對(duì)齊，再按照整數(shù)的法則進(jìn)行計(jì)算，最后在得數(shù)里對(duì)齊橫線上的 小數(shù)點(diǎn)，點(diǎn)上 小數(shù)點(diǎn)即可．）進(jìn)行解答即可．

解答 解：計(jì)算小數(shù)加、減法先把各數(shù)的 小數(shù)點(diǎn)對(duì)齊，再按照 整數(shù)的加減法的法則進(jìn)行計(jì)算，最后在得數(shù)里對(duì)齊橫線上的小數(shù)點(diǎn)，點(diǎn)上小數(shù)點(diǎn)．
故答案為：小數(shù)點(diǎn)，整數(shù)，小數(shù)點(diǎn)．

點(diǎn)評(píng) 本題主要考查小數(shù)加減法的計(jì)算法則，根據(jù)題意進(jìn)一步解答即可．