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The numbers 1, 3 and 5 on a purple background

If a number sequence was 1, 3, 5 then the rule would be 'Add 2'.

Number Sequences 2 (Very Easy)

Number sequences appear everywhere in maths and nature. This 11 Plus quiz helps you recognise easy patterns and learn how numbers grow or repeat predictably.

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Fascinating Fact:

If you fold a piece of paper in half repeatedly, the number of layers forms the sequence 1, 2, 4, 8, 16, a practical demonstration of geometric growth.

In 11 Plus Maths, number sequences help pupils spot relationships between terms and predict what comes next. They build logic, reasoning, and confidence in pattern-based problem solving.

Key Terms

Pattern: A rule that repeats or changes in a predictable way.
Arithmetic Sequence: A sequence that increases or decreases by adding or subtracting the same number.
Geometric Growth: When each number is multiplied by the same amount to create the next term.

Parents can read more about 11 Plus exam topics in our guide to what subjects are tested in the 11 Plus.

Frequently Asked Questions (Click to see answers)

What is a geometric sequence?

A geometric sequence is a pattern where each term is multiplied by the same number to get the next term, like 2, 4, 8, 16.

What is the difference between a pattern and a sequence?

A pattern can appear in shapes or numbers, but a sequence is a specific list of numbers that follow a rule.

How can I find the next number in a sequence?

Look for the rule connecting each term, such as adding, subtracting, or multiplying, then use that rule to find the next term.

Try These Related Quizzes

1 .

Find the missing term.
31, 34, 37, X, ...

The next term is got from the previous term by adding 3, e.g. 31 + 3 = 34 and so on

2 .

Find the missing term.
14, 22, 30, 38, X, ...

The next term is got from the previous term by adding 8, e.g. 14 + 8 = 22 and so on

3 .

Find the missing term.
2, 8, 32, X, 512, ...

128

256

The next term is got from the previous term by multiplying it with 4, e.g. 2 × 4 = 8 and so on

4 .

Find the missing term.
..., 23, 29, 35, X, ...

The next term is got from the previous term by adding 6, e.g. 23 + 6 = 29 and so on

5 .

Find the missing term.
1, 5, 25, X, ...

100

125

The next term is got from the previous term by multiplying by 5, e.g. 1 × 5 = 5 and so on

6 .

Find the missing term.
X, 55, 76, 97, 118, ...

139

137

The next term is got from the previous term by adding 21, e.g. 55 + 21 = 76 and so on.
Notice that the number we are after comes at the start of the sequence

7 .

Find the missing term.
48, 41, 34, X, ...

The next term is got from the previous term by subtracting 7, e.g. 48 - 7 = 41 and so on

8 .

Find the missing term.
42, 51, 60, 69, X, ...

The next term is got from the previous term by adding 9, e.g. 42 + 9 = 51 and so on

9 .

Find the missing term.
2, 15, 28, 41, X, ...

The next term is got from the previous term by adding 13, e.g. 2 + 13 = 15 and so on

10 .

Find the missing term.
17, 6, -5, -16, X, ...

-34

-27

-24

-21

The next term is got from the previous term by subtracting 11, e.g. 17 - 11 = 6 and so on

Author: Frank Evans (Specialist 11 Plus Teacher and Tutor)

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