分數(shù)除以整數(shù)________,等于________;一個數(shù)除以分數(shù)等于________.
分母不變 這個分數(shù)乘這個整數(shù)的倒數(shù) 被除數(shù)乘除數(shù)的倒數(shù)
分析:根據(jù)分數(shù)除法法則即可求解.
解答:分數(shù)除以整數(shù) 分母不變,等于 這個分數(shù)乘這個整數(shù)的倒數(shù);一個數(shù)除以分數(shù)等于 被除數(shù)乘除數(shù)的倒數(shù).
故答案為:分母不變,這個分數(shù)乘這個整數(shù)的倒數(shù); 被除數(shù)乘除數(shù)的倒數(shù).
點評:考查了分數(shù)除法.分數(shù)除以整數(shù),分母不變,如果分子是整數(shù)的倍數(shù),則用分子除以整數(shù),最后不是最簡分數(shù)要化成最簡分數(shù).分數(shù)除以整數(shù),分母不變,如果分子不是整數(shù)的倍數(shù),則用這個分數(shù)乘這個整數(shù)的倒數(shù),最后不是最簡分數(shù)要化成最簡分數(shù).分數(shù)除以分數(shù),等于被除數(shù)乘除數(shù)的倒數(shù),最后不是最簡分數(shù)要化成最簡分數(shù).