How do you say i am twelve years old in Chinese?

In Chinese, you would say "我十二岁" to express "I am twelve years old." This is pronounced as "wǒ shí'èr suì" in Mandarin Chinese. The phrase consists of the Word "我" (wǒ) meaning "I," "十二" (shí'èr) meaning "twelve," and "岁" (suì) meaning "years old."