What is the missing number?
2, 4, 6, __, 10
8
What is the missing number?
5, 10, ___, 20, 25
15
What is the missing number?
10, 20, ___, 40, 50
30
100, 200, ___, 400, 500
300
What is the missing number?
10, 12, ___, 16, 18
14
What is the missing number?
25, 30, 35, ___,45
40
What is the missing number?
80, 70, ___, 50, 40
60
233, 333, ___, 533
433
What is the missing number?
44, 46, 48, ___, 52
50
What is the missing number?
25, 20, 15, ___, 5
10
What is the missing number?
55, 65, ___, 85, 95
75
309, ___, 509, 609, 709
409
What is the missing number?
60, 58, 56, ___,52
54
What is the missing number?
70, 65, ___, 55, 50
60
What is the missing number?
61, 71, 81, __, 101
91
400, 300, ____, 100
200
What is the missing number?
34, ___, 30, 28, 26
32
What is the missing number?
40,___,30, 25, 20
35
What is the missing number?
96, 86, 76, ___, 56
66
531, 431, 331, ___, 131
231