In this activity, we will be using factor pairs to help us divide larger numbers.

 

To answer the question 600 ÷ 3

We know that 2 × 3 = 6

We also know that 20 x 3 = 60

This means that 200 × 3 = 600

So 600 ÷ 3 = 200

 

Example 1

Use the factor pair 3 × 4 = 12 to work out 120 ÷ 30

 

Answer

3 × 4 = 12

30 × 4 = 120

120 ÷ 30 = 4

 

 

Example 2

Use the factor pair 5 × 3 = 15 to work out 1,500 ÷ 5

 

Answer

5 × 3 = 15

5 x 30 = 150

5 × 300 = 1,500

1,500 ÷ 5 = 300

 

Does that make these calculations easier to do in your head?

 

 

Let's have a go at some questions now and remember that you can look back at this introduction at any point during the questions by clicking on the red help button on the screen.