One hundred fifty years.
You write it: 150 000 000.
One hundred and fifty million years.
yes
You need to write your essay.
Expressed in words, this number is one hundred and fifty.
First you will need those. - A pen. - A paper. Then, you just write.
One hundred fifty thousand, two hundred
The phrase "century and a half" represents 150 years. Alternatively, you could refer to it as "one hundred fifty years" or simply "150 years." In historical contexts, it might also be described as a sesquicentennial anniversary.
One hundred seventy years.
Fifty hundred thousand ten thousand one hundred and fifty
One hundred fifty pounds.
One million, one hundred fifty thousand, thirty.