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Divide by 4 (halve and halve again)

In this worksheet, students work out a quarter of a number by halving and halving again.

'Divide by 4 (halve and halve again)' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Multiplication and Division

Curriculum subtopic:   Use Multiplication/Division Facts (3, 4 and 8)

Difficulty level:  

Worksheet Overview

In this activity, we will be learning a method to divide by 4 to find one quarter of a number.

 

One quarter means 1 out of 4 parts. 

So find one-quarter of a number, we need to divide it into 4 equal parts, as shown in this bar model. 

 

bar model showing quarters

 

To work out a quarter of a number quickly, we can use a mental method to divide by 4.

First, we halve the number.

Then we halve that answer.

 

This diagram shows how to use this method to find one-quarter of 24.

 

Half of  24  is 
12
Half of 
12
 is 
6
A quarter of  24  is 
6
24 ÷ 4 = 
6

 

Let's try an example question together. 

 

Example

Use this table to find 64 ÷ 4 by finding A and B.

  

Half of  64  is 
A
Half of 
A
 is 
B
A quarter of  64  is 
B
64 ÷ 4 = 
B

 

Answer 

First, we find half of 64. This is A. A is worth 32.

Next, we find half of A (32), which is 16.

 

Half of  64  is 
32
Half of 
32
 is 
16
A quarter of  64  is 
16
64 ÷ 4 = 
16

 

So A is 32 and B is 16.

One-quarter of 64 is 16.
 


Now that you know this method, it's time to try dividing some numbers by 4.

Good luck!

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