Question

計(jì)算9.876÷0.54時(shí)，被除數(shù)和除數(shù)的小數(shù)點(diǎn)都要向右移動(dòng)（　　）位．

A．一

B．二

C．三

Answer 1

分析：本題根據(jù)除數(shù)是小數(shù)的小數(shù)除法的運(yùn)算法則分析選擇即可．

解答：解：計(jì)算9.876÷0.54時(shí)，由于除數(shù)0.54是兩位小數(shù)，將0.54化成整數(shù)后，小數(shù)點(diǎn)向右移動(dòng)了兩位，則被除數(shù)的小數(shù)點(diǎn)也要相應(yīng)的向右移運(yùn)兩位．
即計(jì)算9.876÷0.54時(shí)，被除數(shù)和除數(shù)的小數(shù)點(diǎn)都要向右移動(dòng)兩位．
故選：B．

點(diǎn)評(píng)：除數(shù)是小數(shù)的小數(shù)除法法則：先看除數(shù)中有幾位小數(shù)，將除數(shù)化成整數(shù)，然后把被除數(shù)的小數(shù)點(diǎn)相應(yīng)向右移動(dòng)幾位，數(shù)位不夠的用零補(bǔ)足； 然后按照除數(shù)是整數(shù)的小數(shù)除法來(lái)除．