The Angstrom is 10-8 cm, but I don't think this is a recommended SI unit. It would be called 100 picometers instead. (1 picometer = 10-12 meters)
One hundred-millionth of a centimetre is one millionth of a meter called a micrometer and written with the Greek *mju* character: µ
A tenth of a nanometre.
So 10000 times less than a cm is a micrometre, more commonly referred to as a micron
3.14 rounded to the nearest one hundred millionth is 3.140000000. Since there are no digits beyond the hundred millionth place that would affect the rounding, the value remains the same.
One hundred-millionth.
Nothing
A millimetere os one tenth of a centimetre so 160mm is 16cm. the reason it is milli-metre is because 'milli' is one millionth so it is one millionth of a metre thus forming millimetre a centimetre is one one hundredth of a metre 'centi' being the word of a hundredth
A second! 1 = Ten tenths = Hundred hundredths = Thousand thousandths etc. A millionth of a millionth of a second, or 1/(1million x 1 million) seconds, is called a picosecond. 1/(1 million) seconds, or one millionth of a second, is called a microsecond. 1/(1000 x 1million) seconds, or one thousandth of a microsecond, is called a nanosecond.
The first one, one hundred millionth, is 1/100,000,000 -- 1 out of 100 million. One hundred millionths is 100/1,000,000 -- 100 out of 1,000,000. It simplifies to 1/10,000.
15,485,863 (fifteen million four hundred eighty five thousand eight hundred sixty three) is the one millionth prime number.
pi*10-8
247.000001