1
4, 12, 20, 28. What is the rule? =
2
3, 14, 25, 36. What is the rule? =
3
What comes next: 81, 72, 63, 54, __ =
4
Fill in the blanks: 2, __, 24, 35, __ =
5
Fill in: 16, 24, 32, 40, 48, __ =
6
9, 18, 27, 36. What is the rule? =
7
What comes next: 14, 21, 28, 35, __ =
8
What comes next: 77, 88, 99, 110, __ =
9
30, 21, 12, 3. What is the rule? =
10
What comes next: 11, 22, 33, 44, __ =
11
What comes next: 108, 96, 84, 72, __ =
12
Fill in: 11, 22, 33, 44, 55, __ =
13
What comes next: 81, 90, 99, 108, __ =
14
67, 55, 43, 31. What is the rule? =
15
What comes next: 216, 204, 192, 180, __ =
16
Fill in: 0, 12, 24, 36, 48, __ =
17
Fill in the blanks: 9, 21, 33, __, __ =
18
Fill in the blanks: 7, 16, 25, __, __ =
19
Fill in: 24, 36, 48, 60, 72, __ =
20
Fill in the blanks: 4, __, 28, __, 52 =