2019小学四年级数学找规律练习:(八)
【习题】
先找出规律,然后在括号里填上适当的数。
(1)2,2,4,6,10,16,(?? ),(?? )
(2)34,21,13,8,5,(?? ),2,(?? )
(3)0,1,3,8,21,(?? ),144[来源:Zxxk.Com]
(4)3,7,15,31,63,(?? ),(?? )
(5)33,17,9,5,3,(?? )[来源:Z_xx_k.Com]
(6)0,1,4,15,56,(?? )
(7)1,3,6,8,16,18,(?? ),(?? ),76,78
(8)0,1,2,4,7,12,20,(?? )
【答案请看下一页】