1
Fill in the blanks: 4, 15, __, __, 48 =
2
10, 22, 34, 46. What is the rule? =
3
Fill in: 33, 44, 55, 66, 77, __ =
4
Fill in the blanks: 9, __, 31, 42, __ =
5
Fill in: 14, 21, 28, 35, 42, __ =
6
Fill in the blanks: 7, 16, __, 34, __ =
7
Fill in: 12, 24, 36, 48, 60, __ =
8
1, 12, 23, 34. What is the rule? =
9
58, 46, 34, 22. What is the rule? =
10
Fill in: 18, 27, 36, 45, 54, __ =
11
86, 79, 72, 65. What is the rule? =
12
Fill in: 9, 18, 27, 36, 45, __ =
13
What comes next: 80, 72, 64, 56, __ =
14
Fill in the blanks: 3, __, 27, __, 51 =
15
Fill in the blanks: 4, __, 18, 25, __ =
16
2, 11, 20, 29. What is the rule? =
17
5, 12, 19, 26. What is the rule? =
18
8, 19, 30, 41. What is the rule? =
19
Fill in: 0, 12, 24, 36, 48, __ =
20
What comes next: 120, 108, 96, 84, __ =