 # Complete Sequences by Filling in Gaps

In this worksheet, students must fill in the gaps in the given number sequences. Key stage:  KS 2

Curriculum topic:  Maths and Numerical Reasoning

Curriculum subtopic:  Place Value

Difficulty level:   ### QUESTION 1 of 10

In this worksheet, we will learn how to complete a sequence by filling in the gaps.

Example 1

Complete the sequence by filling in the gaps:

 1 A 15 22 29 B

Look for clues.

Here we look at 15, 22 and 29 and notice that 22 - 15 = 7 and 29 - 22 = 7, so the gap is 7.

The sequence consists of numbers that increase by 7.

A = 1 + 7 = 8

B = 29 + 7 = 36

 1 8 15 22 29 36

Example 2

Complete the sequence by filling in the gaps:

 A 30 B 54 C 78

This is harder.

54 - 30 = 24

78 - 54 = 24 also.

The gap will be half this, i.e. 12.

A = 30 - 12 = 18

B = 30 + 12 = 42

C = 54 + 12 = 66

 18 30 42 54 66 78

Complete the sequence by filling in the gaps:

 42 A B C 82 92
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 16 A 34 43 B C
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 A B 77 91 105 C
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 33 20 A B C -32
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 A 36 B 10 -3 C
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 A B C 20 5 -10
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 A B 13 2 C -20
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 66 54 A B C 6
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 A 30 B 50 C 70
 Missing Numbers A B C

Complete the sequence by filling in the gaps:

 A 30 B 56 C 82
 Missing Numbers A B C
• Question 1

Complete the sequence by filling in the gaps:

 42 A B C 82 92
 Missing Numbers A B C
EDDIE SAYS
The numbers increase by 10 each time.
• Question 2

Complete the sequence by filling in the gaps:

 16 A 34 43 B C
 Missing Numbers A B C
EDDIE SAYS
The numbers increase by 9 each time.
• Question 3

Complete the sequence by filling in the gaps:

 A B 77 91 105 C
 Missing Numbers A B C
EDDIE SAYS
The numbers increase by 14 each time.
• Question 4

Complete the sequence by filling in the gaps:

 33 20 A B C -32
 Missing Numbers A B C
EDDIE SAYS
The numbers decrease by 13 each time.
• Question 5

Complete the sequence by filling in the gaps:

 A 36 B 10 -3 C
 Missing Numbers A B C
EDDIE SAYS
The numbers decrease by 13 each time.
• Question 6

Complete the sequence by filling in the gaps:

 A B C 20 5 -10
 Missing Numbers A B C
EDDIE SAYS
The numbers decrease by 15 each time.
• Question 7

Complete the sequence by filling in the gaps:

 A B 13 2 C -20
 Missing Numbers A B C
EDDIE SAYS
The numbers decrease by 11 each time.
• Question 8

Complete the sequence by filling in the gaps:

 66 54 A B C 6
 Missing Numbers A B C
EDDIE SAYS
The numbers decrease by 12 each time.
• Question 9

Complete the sequence by filling in the gaps:

 A 30 B 50 C 70
 Missing Numbers A B C
EDDIE SAYS
The numbers increase by 10 each time.
• Question 10

Complete the sequence by filling in the gaps:

 A 30 B 56 C 82
 Missing Numbers A B C
EDDIE SAYS
The numbers increase by 13 each time.
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