Question

11．除數(shù)是小數(shù)的除法，計(jì)算時(shí)都要根據(jù)商不變規(guī)律，把除數(shù)化成整數(shù)再除．

Answer 1

分析 當(dāng)除數(shù)是小數(shù)時(shí)，要根據(jù)“被除數(shù)和除數(shù)同時(shí)擴(kuò)大相同的倍數(shù)（0除外），商不變”的規(guī)律，先把除數(shù)的小數(shù)點(diǎn)去掉，使它變成整數(shù)，再看原來的除數(shù)有幾位小數(shù)，被除數(shù)的小數(shù)點(diǎn)也向右移動(dòng)相同的位數(shù)．如果位數(shù)不夠，要添0補(bǔ)足，然后，按照除數(shù)是整數(shù)的小數(shù)除法法則進(jìn)行計(jì)算．

解答 解：除數(shù)是小數(shù)的除法，計(jì)算時(shí)都要根據(jù)商不變規(guī)律，把除數(shù)化成整數(shù)再除．
故答案為：商不變規(guī)律，整數(shù)．

點(diǎn)評(píng) 考查了小數(shù)除法運(yùn)算，關(guān)鍵是熟練掌握計(jì)算法則正確進(jìn)行計(jì)算．