口算下列各题: ÷ =________; | 0× =________; | ÷ =________; | 1+ =________; |
× =________; | ÷ =________; | × =________; | ÷ =________. |






分析:本题根据分数乘法、除法及加法的计算法则计算即可.
解答:
;
=0;
;
=
;
=
;
=
;
;
.点评:口算各题时要细心分析,注意约分,结果要化为最简分数.
÷
=________;
÷
=________;
=________;
×
÷
×
=________;
÷
=________.