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Number Sequences (Very Easy)
32 - 19 = 13. Unlucky for some?

Number Sequences (Very Easy)

Number sequences help us find patterns in maths. This 11 Plus quiz introduces simple sequences and prepares you for more challenging pattern puzzles ahead.

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Fascinating Fact:

A geometric sequence multiplies instead of adds, turning small numbers into giants, the maths behind population growth and compound interest.

In 11 Plus Maths, pupils study number sequences to recognise patterns, identify missing terms, and understand how rules repeat across sets. These skills strengthen logical thinking and prepare for algebra later.

  • Sequence: A list of numbers that follow a specific rule or pattern.
  • Term: Each individual number or item in a sequence.
  • Geometric Sequence: A sequence where each term is multiplied by the same number to get the next one.
What is a number sequence in maths?

A number sequence is a list of numbers that follow a pattern, such as adding or multiplying by the same amount each time.

What is the difference between arithmetic and geometric sequences?

In an arithmetic sequence, numbers increase by adding the same amount. In a geometric sequence, they increase by multiplying by the same number.

How do you find the next term in a sequence?

Look at how the numbers change from one term to the next, then apply the same rule to find the next number.

1 .
Find the missing term.
2, 4, 6, 8, X, ...
10
12
14
16
The next term is got from the previous term by adding 2, e.g. 6 + 2 = 8 and so on
2 .
Find the missing term.
1, 3, 9, X, 81, ...
18
21
27
24
The next term is got from the previous term by multiplying it with 3, e.g. 9 × 3 = 27 and so on
3 .
Find the missing term.
14, 21, 28, X, ...
42
49
35
56
The next term is got from the previous term by adding 7, e.g. 14 + 7 = 21 and so on
4 .
Find the missing term.
4, 8, 12, 16, X, ...
28
32
24
20
The next term is got from the previous term by adding 4, e.g. 12 + 4 = 16 and so on
5 .
Find the missing term.
..., 15, 20, 25, X, ...
35
40
45
30
The next term is got from the previous term by adding 5, e.g. 15 + 5 = 20 and so on
6 .
Find the missing term.
1, 3, 5, 7, X, ...
11
9
13
15
The next term is got from the previous term by adding 2, e.g. 5 + 2 = 7 and so on
7 .
Find the missing term.
9, 18, 36, X, ...
45
54
72
81
The next term is got from the previous term by multiplying by 2, e.g. 18 × 2 = 36 and so on
8 .
Find the missing term.
7, 2, -3, -8, X, ...
-3
-13
-5
-7
The next term is got from the previous term by subtracting 5, e.g. 2 - 5 = -3 and so on
9 .
Find the missing term.
-6, -9, -12, X, ...
-15
-18
-21
-24
The next term is got from the previous term by subtracting 3, e.g. -6 - 3 = -9 and so on
10 .
Find the missing term.
X, 32, 51, 70, 89, ...
13
15
17
16
The next term is got from the previous term by adding 19, e.g. 51 + 19 = 70 and so on
Author:  Frank Evans (Specialist 11 Plus Teacher and Tutor)

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