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小学数学二年级上册按规律填数专项练习题(思维训练)
二年级数学上册按规律填数专项练习班级考号姓名总分例1. 按规律填数(1)15,5,12,5,9,5,( ),( )写一写你发现的规律:____________________(2)5,9,10,8,15,7,( ),( )写一写你发现的规律:____________________举一反三1:按规律填数。1.(1)( ),( ),7,34,7,36,7,38规律:____________________(2)( ),( ),5,4,9,6,13,8规律:____________________2.(1)25,4,20,4,15,4,( ),( )规律:____________________(2)8,7,10,6,12,5,( ),( )规律:____________________3.(1)1,16,3,8,9,4,( ),( )规律:____________________(2)40,16,20,8,10,4,( ),( )规律:____________________例2.仔细观察,找规律填数0,1,2,3,6,7,( ),( )写一写你发现的规律:____________________3 举一反三2:仔细观察,找规律填数。1.3,6,12,( ),( )规律:____________________2.1,2,4,5,10,( ),( )规律:____________________3.3,6,5,10,9,( ),( )规律:____________________4.30,15,14,7,6,( ),( )规律:____________________5.2,3,4,3,5,4,5,4,5,6,( ),( )规律:____________________例3.仔细观察,找规律填数(1)0,1,4,9,( ),( ),36写一写你发现的规律:____________________(2)2,4,( ),( ),32,64写一写你发现的规律:____________________(3)1,3,7,( ),31,63写一写你发现的规律:____________________举一反三3.按规律填数1.4,9,16,( ),( ),49写一写你发现的规律:____________________2.81,( ),49,36,( )写一写你发现的规律:____________________3.1,2,4,8,( ),( )写一写你发现的规律:____________________3 3查看更多