**Learning Objectives:**

- Using a number line
- Partitioning decimals
- Compare decimals
- Rounding decimals

**Key words***: Number line, decider, decimal point, less then, greater then,*

It is easy to understand decimals using a number line

**Number Sequences with decimals**

Number sequences are about counting on or counting back

Start counting the decimals between 4 and 5 adding 0.2

Now let’s count from 4 to 6 using the same method adding 0.4 :

**4.0; 4.4; 4.8; 5.2; 5.6; 6**

**Other examples:**

0; 0.5; 1.0; 1.5; 2.0; 2.5; 3.0;

0; 0.3; 0.6; 0.9; 1.2; 1.5; 1.8;

0; 0.4; 0.8; 1.2; 1.6; 2.0; 2.4;

** ****Partitioning decimals**

Any decimal number has **a whole number** part and a **decimal** part

**3.24**= **3 ** + **0.24**

**whole decimal**

There are other ways of partitioning a decimal number:

4.25 = 1+3+ 0.20+ 0.05

71.2 = 70+ 1+ 0.2

1.47 = 1+ 0.47

**Decimals can be compared**

To compare numbers you need to use Inequality symbols**:**** **

**>**** means** **“is less then ”**

**2**.1 because the whole number is bigger

2.**3** 2.4 or 4.2=>2.4

5.3**>**4.2 or 5.3=>4.2

7.4 **round up**

**4 d.p- 4.0164- the decider is 2 round down**

**3 d.p- 4.016- the decider is 4 round down**

Need to practice? Download **here** a free decimal worksheet

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