Missing Number Sequencing
Following the pattern, what number goes into the empty blank?
1, 2, 3, 4, _____...
5
Fill in the missing blank to the input/output machine:
INPUT OUTPUT
2 3
3 4
4 ____
5
Rule: +1
What is the rule of the following pattern?
5, 7, 9, 11, 13...
+2
Following the pattern, what number goes into the empty blank?
5, 10, ____, 20, 25...
15
Fill in the missing blank to the input/output machine:
INPUT OUTPUT
10 13
15 ____
20 23
18
Rule: +3
What is the rule of the following pattern?
5, 10, 20, 40, 80, 160...
x2
Following the pattern, what number goes into the empty blank?
2, ____, 6, 8, 10, 12, 14...
4
Fill in the missing blank to the input/output machine:
INPUT OUTPUT
15 ____
16 16
17 17
15
Rule: x1
What is the rule of the following pattern?
100, 90, 80, 70, 60, 50...
-10
Following the pattern, what number goes into the empty blank?
9, 18, 27, _____, 45...
36
Fill in the missing blank to the input/output machine:
INPUT OUTPUT
20 14
18 12
16 ____
10
Rule: -6
What is the rule of the following pattern?
1, 10, 19, 28, 37...
+9
Following the pattern, what number goes into the empty blank?
1,000, _____, 800, 700, 600...
900
Fill in the missing blank to the input/output machine:
INPUT OUTPUT
0 0
4 40
5 50
10 ____
100
Rule: x10
What is the rule of the following pattern?
6, 18, 54, 162...
x3