1
Fill in: 7, 14, 21, 28, 35, __ =
2
6, 15, 24, 33. What is the rule? =
3
What comes next: 144, 153, 162, 171, __ =
4
Fill in the blanks: 1, __, __, 37, 49 =
5
Fill in the blanks: 7, __, 23, 31, __ =
6
Fill in: 12, 24, 36, 48, 60, __ =
7
2, 9, 16, 23. What is the rule? =
8
Fill in: 21, 28, 35, 42, 49, __ =
9
35, 28, 21, 14. What is the rule? =
10
72, 63, 54, 45. What is the rule? =
11
72, 65, 58, 51. What is the rule? =
12
What comes next: 209, 220, 231, 242, __ =
13
What comes next: 36, 45, 54, 63, __ =
14
Fill in: 14, 21, 28, 35, 42, __ =
15
10, 22, 34, 46. What is the rule? =
16
Fill in: 12, 24, 36, 48, 60, __ =
17
Fill in the blanks: 5, 14, __, __, 41 =
18
What comes next: 90, 81, 72, 63, __ =
19
Fill in: 24, 32, 40, 48, 56, __ =
20
Fill in: 18, 27, 36, 45, 54, __ =