One hundred hundredths is simply 100/100 which is 1.
One hundred fifty-four and two hundredths is 154.02
One hundred six and seven hundredths in decimal form would be 106.07.
It is one hundred twenty and nine hundredths.
One hundred fifty hundredths written in decimal form is 1.50
Exactly as it is because it is already in decimal form as 500.81
That would be 19.01.