北师大版五年级数学下册分数除法练习题(共2页).docx

精选优质文档-倾情为你奉上北师大版五年级数学下册分数除法练习题一、 口算122/3 = 8/912= 189/20 = 9/113=3/204/9 = 4/1515/16 = 5/6 10= 75/14 =9/40 2/3 = 121/5 = 3/5 3= 27 9/20=1/51/3 = 6 3/5 = 6/11 2= 3/4 4/3 =二、 计算，能简便可以简便。(5/7 - 5/8)5/32 24(3/8 +1/4 ) ( 3/4+1/6 -3/24 )1/24(1/4 - 1/9)49 5/11 9+6/11 1/9 42( 1/62/9 )三、 解方程3/8X+1/4 = X- 1/7 X = 3/16 X-40%X=40四、 填空1.2/5 3/42/5 4/534/5 1/22/5 2/5 125/4 12 8/92/5 8/9123/4 123/4 5/8 5/2 5/82/5 15/12 12/5 12. 3/2的