Identify Sequence Types and Find Missing Numbers

In this worksheet, students will identify missing numbers in sequences of odd and even numbers, as well as times table sequences.

Key stage:  KS 2

Curriculum topic:   Verbal Reasoning

Curriculum subtopic:   Number Sequences

Difficulty level:

QUESTION 1 of 10

Number detective, you’ve arrived just in time!

We’re faced with a new puzzle and we hope you can help us solve it.

Can you work out which number comes next in this sequence?

6, 8, 10, 12, 14, __

Did you get 16?

This is an even number sequence and the next even number after 14 is 16.

Even numbers are numbers which end in 2, 4, 6, 8 or 0.

Which number is missing from this sequence?

3, 5, 7, __ , 11, 13

This is a sequence of odd numbers and the missing odd number, between 7 and 11, is 9.

Odd numbers are numbers which end in 1, 3, 5, 7 or 9.

Sometimes, sequences may go up or down in multiples from your times tables.

Which times table does this sequence form part of and can you figure out which number comes next?

3, 6, 9, 12, __

This is the three times table and the missing number is 15.

It’s now your turn to find the missing numbers.

Good luck number detective!

We are counting on you...

What type of numbers are the numbers below?

70          100         60           10          90

Odd numbers

Multiples of 10

What type of numbers are the numbers below?

95              45                60                25            20

Multiples of 5

Even numbers

Type in the number that comes next in the sequence below.

Multiples of 5

Even numbers

Which number would come next in the following sequence?

Fill in the blank below.

Multiples of 5

Even numbers

Which number is missing from this sequence?

Fill in the blank below.

Multiples of 5

Even numbers

Which number is missing from the sequence below?

3, 6, __, 12, 15

Which number is missing from the following sequence?

8, 16, __ , 32, 40

Which number is missing in this sequence?

21, 24, __ , 30, 33

Match each sequence to its times table below.

Column B

16, 24, 32, 40
3 times table
6, 9, 12, 15,
4 times table
60, 70, 80, 90
10 times table
16, 20, 24, 28
8 times table

Match each sequence to its missing number.

Column B

3, 6, __ , 12, 15
15
4, 8, __ , 16, 20
24
5, 10, __ , 20, 25
12
8, 16, __ , 32, 40
9
• Question 1

What type of numbers are the numbers below?

70          100         60           10          90

Multiples of 10
EDDIE SAYS
Hi number detective! Did you notice that all of the numbers here are in the 10 times table? Anything in the 10 times table is a multiple of 10. What do you notice about the digit that they all end in? All multiples of 10 end in a 0.
• Question 2

What type of numbers are the numbers below?

95              45                60                25            20

Multiples of 5
EDDIE SAYS
Did you notice that all of our numbers here end in a 5 or a 0? Numbers that end in a 5 or a 0 are in the 5 times table and we call these multiples of 5. Make sure you use your number detective magnifying glass to spot this type of number!
• Question 3

Type in the number that comes next in the sequence below.

EDDIE SAYS
Did you notice which times table we had in our sequence here? This is the 4 times table and the next number after 16 in the 4 times table is 20. Let's try another...
• Question 4

Which number would come next in the following sequence?

Fill in the blank below.

EDDIE SAYS
Which times table did this sequence go up in? All of these numbers are in the 3 times table. If we don't spot our 3 times table, we can add 3 more to 18. This gives us the number 21 too. Keep up the hard work number detective, I'm COUNTING on you to spot these times table sequences.
• Question 5

Which number is missing from this sequence?

Fill in the blank below.

EDDIE SAYS
It's back to the 4 times table for us! The number 20 comes after 16 in the 4 times table. We can also count up in 4 by counting up by 2 and 2 again.
• Question 6

Which number is missing from the sequence below?

3, 6, __, 12, 15

9
EDDIE SAYS
Here is another 3 times table sequence. The next multiple of 3 after 6 is 9. Alternatively, we can see the numbers are increasing by +3 each time, and 6 + 3 = 9. Keep an eye out for these times table sequences number detective!
• Question 7

Which number is missing from the following sequence?

8, 16, __ , 32, 40

24
EDDIE SAYS
Which times table is this sequence going up in? The numbers are getting 8 bigger each time. 16 + 8 = 24. Our 8 times table is double our 4 times table so if you know your 4s, you can work out your 8s!
• Question 8

Which number is missing in this sequence?

21, 24, __ , 30, 33

27
EDDIE SAYS
It's back to the 3 times table for us now detective. The next multiple of 3 after 24 is 27. How many 3s go into 27?
• Question 9

Match each sequence to its times table below.

Column B

16, 24, 32, 40
8 times table
6, 9, 12, 15,
3 times table
60, 70, 80, 90
10 times table
16, 20, 24, 28
4 times table
EDDIE SAYS
How many matches did you find? Practising times tables is a really important part of being a great number detective. Ask an adult to help you find or assign some more times tables practice on EdPlace if you think it will help improve your number detective skills.
• Question 10

Match each sequence to its missing number.

Column B

3, 6, __ , 12, 15
9
4, 8, __ , 16, 20
12
5, 10, __ , 20, 25
15
8, 16, __ , 32, 40
24
EDDIE SAYS
How many matches did you find? Make sure you check carefully how much the numbers go up in each time. Then add this to the number before the missing number. Excellent job number detective!
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