In this activity we will learn to arrange decimal numbers in order, smallest first.

We are going to be comparing and ordering decimal numbers with **one decimal place**.

Look at this set of numbers.

7.1 2.3 6.0 2.2 6.4

Firstly, we compare the numbers by how many **ones** they have.

**2**.3 and **2**.2 both have **two ones**. These will be the smallest numbers.

Now, we can compare these numbers by how many **tenths** they have.

2.**2** has **two tenths** and 2.**3** has **three-tenths**.

So, 2.2 is the smallest number.

Next, we can compare **6**.0 and **6**.4 in the same way. They both have **six ones.**

6.**0** has zero tenths and 6.**4** has **four-tenths. **

So, 6.0 is smaller than 6.4.

Lastly, that leaves us with **7**.1, which has **seven ones**. This is the **largest** number.

So, the numbers in order are:

2.2 2.3 6.0 6.4 7.1

Now try an example question:

**Example**

Put these numbers in order, smallest first.

9.3 1.6 5.0 1.2 5.7

**Answer**

First, we look for numbers with the smallest **ones digits**.

Here we have two, **1**.6 and **1**.2 so we must compare the **tenths** digits to see that 1.**2** is less than 1.**6**.

The next numbers to look at are 5.0 and 5.7. We see that 5.0 is worth **less** than 5.7.

Finally, 9.3 is **largest**.

So the final order is **1.2 , 1.6 , 5.0 , 5.7 , 9.3**

Now you're ready to try some more questions. Good luck!