How to say 0.509 in words

Here we will show you how to spell, write, and say 0.509 in word form. There are many correct ways of saying and writing 0.509.

You could simply say the numbers in 0.509 one at a time like this:

zero point five zero nine

You can also see 0.509 as a fraction (509/1000) and should therefore be said and written as follows:

five hundred nine thousandths

Instead of zero, some also use "oh" when saying 0.509 which makes it:

oh point five oh nine

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