Decimal numbers are another way of writing fractions or numbers that aren’t whole numbers.  All decimal numbers have a decimal point in them which separates the part of the number which is larger than one from the part that is smaller than one.  Let’s look at the following decimal number:

                                                             215.678

We can split this number up into lots of decimal numbers:

                               215.678 = 200.0 + 10.0 + 5.0 + 0.6 + 0.07 + 0.08

In word form this is:

2 hundreds + 1 ten + 5 units + 6 tenths + 7 hundredths + 8 thousandths

This table shows all the words for these different orders of magnitude: