找规律填数习题1.仔细观察每一排数的排列有什么规律,然后按规律在( )内填上适当的数.(1)2,4,8,16,( ),64.(2)1,4,9,16,( ),36,49.64.(3)1,4,7,10,13,( ),19,21.(4)1,4,16,64,( ),1024,4096.(5)2,3,5,9,17,( ),65,129.(6)15,4,13,4,11,4,( ),( ).(7)8,15,10,13,12,11,( ),( ).
问题描述:
找规律填数习题
1.仔细观察每一排数的排列有什么规律,然后按规律在( )内填上适当的数.
(1)2,4,8,16,( ),64.
(2)1,4,9,16,( ),36,49.64.
(3)1,4,7,10,13,( ),19,21.
(4)1,4,16,64,( ),1024,4096.
(5)2,3,5,9,17,( ),65,129.
(6)15,4,13,4,11,4,( ),( ).
(7)8,15,10,13,12,11,( ),( ).
答
(1)32
(2)25
(3)16
(4)256
(5)33
(6)9,4
(7) 14,9
答
32,规律是后面是前面的2倍
25,规律是完全平方数列
16,规律是+3
256,规律是×4
33,规律是+1,+2,+4,+8……每次加的都是前一次的2倍
9、4,规律是奇数位是-2,偶数位都是4
14、9,规律是奇数位+2,偶数位-2
答
(1)2,4,8,16,(32),64.
(2)1,4,9,16,(25),36,49.64.
(3)1,4,7,10,13,(16),19,21.
(4)1,4,16,64,(256),1024,4096.
(5)2,3,5,9,17,(33),65,129.
(6)15,4,13,4,11,4,(9),(4).
(7)8,15,10,13,12,11,(14),(9).