1
Fill in: 9, 12, 15, 18, 21, __ =
2
4, 10, 16, 22. What is the rule? =
3
32, 28, 24, 20. What is the rule? =
4
3, 6, 9, 12. What is the rule? =
5
What comes next: 114, 120, 126, 132, __ =
6
3, 9, 15, 21. What is the rule? =
7
52, 49, 46, 43. What is the rule? =
8
Fill in: 9, 12, 15, 18, 21, __ =
9
What comes next: 27, 24, 21, 18, __ =
10
87, 81, 75, 69. What is the rule? =
11
What comes next: 108, 114, 120, 126, __ =
12
Fill in: 8, 12, 16, 20, 24, __ =
13
1, 4, 7, 10. What is the rule? =
14
Fill in: 0, 3, 6, 9, 12, __ =
15
What comes next: 54, 51, 48, 45, __ =
16
What comes next: 9, 12, 15, 18, __ =
17
Fill in: 3, 6, 9, 12, 15, __ =
18
What comes next: 68, 64, 60, 56, __ =
19
5, 9, 13, 17. What is the rule? =
20
Fill in: 12, 16, 20, 24, 28, __ =