一、按规律画图 (4)仔细观察下图,接着画 (5)观察下图的变化,想一想第4幅图应画上怎样的图形? 二、找找下列各数列的规律,在括号内填上合适的数。 (1)1,3,5,( ),9 (2)1,4,( ),10,13,( ) ,( ) (3)1,5,( ),13,( ) ,( ) (4)2,4,( ),( ),12,( ) (5)1,7,( ),19,( ),31,( )’43’ (6)5,10,( ),20,( ),30,( ),35,( ) (7)3,6,9,( ),( ),18,( ),24 (8)2,6,10,( ),( ),22,( ),( ),32,( )(9)35,30,( ),( ),15,( ),( ) (10)50,40( ),( ),( ) (11)65,60,( ),( ),( ),40,( ),( ),( ) (12)57,50,( ),( ),( ),22,( ).( ),13 (14)66,61,( ),( ),46,( ),( ),31,( ) (15)5,15,( ),( ),( ),55,( ),( ) (16)95,85,( ),( ),55,( ),( ),25,( ),( ) (17)22,20,( ),( ),( ),12,( ),( ),( ),( ) 京翰教育http://www.zgjhjy.com/ 本文来源:https://www.wddqw.com/doc/45bb183e376baf1ffc4fad7b.html