In this activity, we're going to be finding the** multiples of numbers**.

Now, the first thing we need to sort out is "What is a multiple?"

Multiples are simply the **answers to any times table question! **

The first six multiples of **3 are: 3, 6, 9, 12, 15, 18...**

The first six multiples of **5 are: 5, 10, 15, 20, 25, 30 ...**

The first six multiples of **7 are: 7, 14, 21, 28, 35, 42 ...**

To find the multiples of any number, we need to know our times tables.

We might be asked to find particular multiples:

Find the first three multiples of 2: ** 2, 4, 6**

Find all multiples of 2 between 10 and 20:** ****12, 14, 16, 18 **(**not** 10 or 20 because the question asks us to find numbers 'between' **not **'including'**)**

Sometimes, we may be asked to find **common multiples** of a pair of numbers.

This is easier than it sounds.

A **common multiple **is simply a multiple that is in** both times tables.**

Let's have a look at an example:

**Find two common multiples of 3 and 5**

First, let's write out the tables.

**Multiples of 3**: 3, 6, 9, 12, **15,** 18, 21, 24, 27, **30**...

**Multiples of 5**: 5, 10, **15****,** 20, 25, **30**, 35, 40, 45, 50...

We can see that the numbers **15 and 30** are in both times tables (they are **common** to both).

Now why don't you have a go at finding some multiples and common multiples?

Come back and have a look at this page if you get stuck by clicking on the red help button on the screen.