I'm guessing its cent ans
In French, you say "cent ans" to mean "100 years old."
"I am 100 years old" in French is "J'ai 100 ans".
Cinquante ans is how you say fifty years old
You can say "J'ai 40 ans" in French to mean "I am 40 years old."
"21 years old" in French is said as "vingt et un ans"
You would say "Il a quarante ans" in French to mean "He is 40 years old."
"I am 100 years old" in French is "J'ai 100 ans".
Cinquante ans is how you say fifty years old
To say 100 in French, you simply say cent. It's like in English where a cent is one hundredth of a dollar, or a century is 100 years.
To say "I am nine years old" in French, you would say "J'ai neuf ans."
You would say "Il a 57 ans" in French, which directly translates to "He is 57 years old."
I am 13 years old is "j'ai treize ans" in French.
However if you want to say I am eleven years old you would say J'ai onze ans.
quarante ans is the age of a person. It says forty years old in french.
You would say "Il a 27 ans" in French.
(I am) 42 years old = j'ai quarante deux ans
I am __ years old. → J'ai __ ans.He is __ years old. → Il a __ ans.She is __ years old. → Elle a __ ans.
ans means years not old. Old in french would be vieux