It is called Centenary.
1 with a hundred zero is called a gogle
one hundred quadrilion
One hundred-millionth of a centimetre is one millionth of a meter called a micrometer and written with the Greek *mju* character: µ
One centomillenium.
One hundred million
Centennial
A one-hundred-year-old person can be called a Centenarian.
Chinese New Year
The numeral is "one thousand, one hundred" and the year is "eleven hundred."
after 1 year a hundred dollars was worth one hundred and fifty dollars.
1 with a hundred zero is called a gogle
US
Everybody celebrates in different ways. There is no one answer to this question.
The one in new York is the best
Two hundred years could be called: - two centuries - twenty decades - two-hundred years
It is written: Nineteen hundred or one thousand nine hundred.
The number 103 is spelled out in words as one hundred and three.