Converting whole numbers and fractions into whole numbers with **decimals** is quite straightforward.

In this instance, **two and a half** converts into **2.5**. The half goes behind the **decimal** point as it is smaller than the number in the 'singles' column.

As you can see, the .5 goes into the first column behind the

**decimal** point, the 'tenths' column. Therefore, it is the same as five-tenths, which reduced to its lowest common denominators, gives us one-half, which is what we started with.

The 2 in 2.5, as a single whole number, belongs in the first column to the left of the **decimal** point, the singles column.

When thinking about a **decimal number**, it can be easier to think of it as a whole number with a fraction. For example, the number 3.75 as a fraction would be three and three-quarters.

In this case, we go .75 as a hundredth of a **whole number**, as the last digit sits in the hundredths column, behind the decimal point. Three-quarters of a hundred is 75, so we know .75 is the correct way to express three-quarters as a decimal.

For more Blurtit help with whole numbers and decimals, have a look at How Do I Change 2 3/4 Into A Decimal? and How do you change fractions and percentages into decimals? Or, you can watch this useful YouTube film on the subject: