小学数学二年级上册按规律填数专项练习题(思维训练)

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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
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