# Multiplication: Finding Four Times a Number

In this worksheet, students multiply numbers by 4 by doubling and doubling again.

Key stage:  KS 2

Curriculum topic:   Number: Multiplication and Division

Curriculum subtopic:   Write Multiplication/Division Statements for Known Tables

Difficulty level:

### QUESTION 1 of 10

In this worksheet we use a quick number trick to multiply numbers by four.

Here are five candles.

If we double this number we get 2 × 5 = 10 candles

If we double this number again we get 2 × 10 = 20 candles

This is 4 lots of the original 5 candles so 4 × 5 = 20

To multiply a number by 4, we double it and double the answer again.

Example

Find 4 × 5 by using this table to find first A and then B.

Twice 5  is
 A
Double
 A
is
 B
Then 4 × 5  is
 B

Twice 5 is 10, so A is 10.

Double 10 is 20, so B is 20.

So 4 × 5 is 20.

Want to understand this further and learn how this links to other topics in maths?
Why not watch this video?

Find 4 × 5

Twice 5  is
 A
Double
 A
is
 B
Then 4 × 5  is
 B

Find 4 × 6

Twice 6  is
 A
Double
 A
is
 B
Then 4 × 6  is
 B

Find 4 × 2

Twice 2  is
 A
Double
 A
is
 B
Then 4 × 2  is
 B

Find 4 × 3

Twice 3  is
 A
Double
 A
is
 B
Then 4 × 3  is
 B

Find 4 × 9

Twice 9  is
 A
Double
 A
is
 B
Then 4 × 9  is
 B

Find 4 × 8

Twice 8  is
 A
Double
 A
is
 B
Then 4 × 8  is
 B

Find 4 × 4

Twice 4  is
 A
Double
 A
is
 B
Then 4 × 4  is
 B

Find 4 × 10

Twice 10  is
 A
Double
 A
is
 B
Then 4 × 10  is
 B

Find 4 × 1

Twice 1  is
 A
Double
 A
is
 B
Then 4 × 1  is
 B

Find 4 × 7

Twice 7  is
 A
Double
 A
is
 B
Then 4 × 7  is
 B
• Question 1

Find 4 × 5

Twice 5  is
 A
Double
 A
is
 B
Then 4 × 5  is
 B
• Question 2

Find 4 × 6

Twice 6  is
 A
Double
 A
is
 B
Then 4 × 6  is
 B
• Question 3

Find 4 × 2

Twice 2  is
 A
Double
 A
is
 B
Then 4 × 2  is
 B
• Question 4

Find 4 × 3

Twice 3  is
 A
Double
 A
is
 B
Then 4 × 3  is
 B
• Question 5

Find 4 × 9

Twice 9  is
 A
Double
 A
is
 B
Then 4 × 9  is
 B
• Question 6

Find 4 × 8

Twice 8  is
 A
Double
 A
is
 B
Then 4 × 8  is
 B
• Question 7

Find 4 × 4

Twice 4  is
 A
Double
 A
is
 B
Then 4 × 4  is
 B
• Question 8

Find 4 × 10

Twice 10  is
 A
Double
 A
is
 B
Then 4 × 10  is
 B
• Question 9

Find 4 × 1

Twice 1  is
 A
Double
 A
is
 B
Then 4 × 1  is
 B
• Question 10

Find 4 × 7

Twice 7  is
 A
Double
 A
is
 B
Then 4 × 7  is
 B
---- OR ----

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