I am not sure of the specific term, but you write it like this:
EX: 6.55555555555555555555-> and so on, becomes,
_
6.5
.888888888888888 it goes on forever and never ends.
It is called a decimal fraction.
√17 is irrational (a never repeating, never ending) decimal. √17 ≈ 4.1231
It is simply called conversion from a fractional form to a decimal form.
10% when expressed in decimal form is 0.1. The first decimal place right to the decimal is called a tenth
7/9 written in decimal form is .77777, where the seven is a repeated decimal, meaning that it never ends0.7777 repeating
0.667 is a terminating decimal.
3.14159 26535 89792 That's as far as this contributor knows it. It has been worked out and published to over 1,000 decimal places. It never comes out even ... the decimal never ends. That's why it's called an "irrational" number, and represented by a symbol. The form you gave in your question is better than you will ever require in any numerical calculation. It will limit the error in your answer to less than 7 parts in 10 billion.
Any number can be put into decimal form.
They don't stop.
They don't stop.
For roughly the same reason that you can't write exactly 1/3 , 1/6 , 1/7 ,or the square root of 2 as a decimal.Many numbers have no exact decimal form. When you try to write one of themas a decimal, you can get as close to the real thing as you want to be, by writingmore and more decimal places, but the decimal never comes out even and ends.