1
Fill in: 15, 20, 25, 30, 35, __ =
2
Fill in: 10, 20, 30, 40, 50, __ =
3
40, 35, 30, 25. What is the rule? =
4
What comes next: 13, 15, 17, 19, __ =
5
Fill in: 5, 10, 15, 20, 25, __ =
6
What comes next: 28, 26, 24, 22, __ =
7
2, 7, 12, 17. What is the rule? =
8
What comes next: 15, 25, 35, 45, __ =
9
What comes next: 70, 65, 60, 55, __ =
10
What comes next: 11, 21, 31, 41, __ =
11
What comes next: 4, 6, 8, 10, __ =
12
79, 74, 69, 64. What is the rule? =
13
What comes next: 3, 8, 13, 18, __ =
14
Fill in: 20, 30, 40, 50, 60, __ =
15
34, 29, 24, 19. What is the rule? =
16
32, 27, 22, 17. What is the rule? =
17
56, 54, 52, 50. What is the rule? =
18
What comes next: 12, 17, 22, 27, __ =
19
What comes next: 55, 50, 45, 40, __ =
20
What comes next: 3, 5, 7, 9, __ =