It's also known as ground zero or surface zero. It's pretty much the point of impact.
Thirteen point zero zero.
The word name for the number 8.0408 is "eight point zero four zero eight."
The word name for 210.009 is "two hundred ten point zero zero nine." In this case, the whole number part is "two hundred ten," and the decimal part is read as "point zero zero nine."
Zero point two
zero point two
Zero point nine
The word name for the number 10.00506 is "ten point zero zero five zero six." In this case, the digits after the decimal point are read individually, and the whole number is referred to as "ten."
six point two zero zero four seven
Seven point zero six.
Point nought nought two or point zero zero two.
Fifteen hundred point zero zero zero. One five zero zero point zero zero zero. One thousand five hundred point zero zero zero.
zero point zero nine three in (inch)