Use a Rule
The first number is 15. The rule is to subtract 3. What is the next number in the sequence?
15, ____,
12
60, 65, 70, 75, 80, ____, 90
85
2, 7, 12, 17
Add 5
The first number is 3. The rule is to multiply by 4.
3, 12, ____,
48
Find the next number in this sequence:
2, 3, 5, 8, 12, ____
17
6, 27, 48
Add 21
The first number is 900. The rule is to subtract 20. What is the next number in the pattern?
900, ____,
880
Find the missing number in this sequence:
71, 63, 55, __, 39
47
2, 6, 18, 54, 162
The first number is 125. The rule is to divide by 5.
125, 25, _____,
5
Find the missing number in this sequence:
2, 2, 4, 8, 14, 22, _____ , 44
32
63, 21, 7
Divide by 3
The first number is 320. The rule is to divide by 4.
320, _____,
80
Find the missing number in this sequence:
1, 3, 9, 27, ____
81
1, 4, 10, 22, 46
Multiply by 2 then add 2