一年级找规律填数

班级:__________ 姓名:__________ 得分:__________
72, 74, (   ), 78, 80 = 76
10, 20, 30, 40, (   ) = 50
48, 46, 44, (   ), 40 = 42
30, 29, 28, (   ), 26 = 27
50, 55, 60, (   ), 70 = 65
36, 37, 38, 39, (   ) = 40
10, 20, (   ), 40, 50 = 30
20, 25, 30, (   ), 40 = 35
20, 21, 22, (   ), 24 = 23
19, 20, 21, 22, (   ) = 23
40, 42, 44, 46, (   ) = 48
34, 36, 38, (   ), 42 = 40
37, 35, 33, (   ), 29 = 31
24, 22, 20, 18, (   ) = 16
25, 30, 35, (   ), 45 = 40
62, 64, 66, (   ), 70 = 68
25, 24, (   ), 22, 21 = 23
42, 40, (   ), 36, 34 = 38
19, 20, 21, 22, (   ) = 23
30, 32, 34, 36, (   ) = 38
6, 8, 10, (   ), 14 = 12
35, 36, 37, 38, (   ) = 39
67, 68, (   ), 70, 71 = 69
24, 26, 28, 30, (   ) = 32
61, 63, (   ), 67, 69 = 65
45, 50, (   ), 60, 65 = 55
35, 40, 45, 50, (   ) = 55
32, 33, 34, (   ), 36 = 35
30, 40, 50, 60, (   ) = 70
9, 10, (   ), 12, 13 = 11