1
Fill in: 20, 30, 40, 50, 60, __ =
2
78, 73, 68, 63. What is the rule? =
3
81, 79, 77, 75. What is the rule? =
4
What comes next: 18, 16, 14, 12, __ =
5
7, 17, 27, 37. What is the rule? =
6
Fill in: 2, 4, 6, 8, 10, __ =
7
Fill in: 15, 20, 25, 30, 35, __ =
8
Fill in: 30, 40, 50, 60, 70, __ =
9
What comes next: 170, 160, 150, 140, __ =
10
Fill in: 4, 6, 8, 10, 12, __ =
11
Fill in: 0, 2, 4, 6, 8, __ =
12
9, 19, 29, 39. What is the rule? =
13
Fill in: 0, 2, 4, 6, 8, __ =
14
Fill in: 10, 15, 20, 25, 30, __ =
15
Fill in: 4, 6, 8, 10, 12, __ =
16
Fill in: 6, 8, 10, 12, 14, __ =
17
Fill in: 20, 30, 40, 50, 60, __ =
18
82, 72, 62, 52. What is the rule? =
19
What comes next: 20, 22, 24, 26, __ =
20
What comes next: 80, 75, 70, 65, __ =