Is the word duzentas the same in Brazilian and European Portuguese?

Yes

The spelling, meaning, and grammatical function of "duzentas" (the feminine plural form of the number 200) are identical in both Brazilian and Continental Portuguese. The only difference is in pronunciation. In Brazilian Portuguese, the vowels are typically more open, and the final "s" is usually pronounced as a dental "s" (like the English "s" in "sun"). In Continental Portuguese, the vowels are generally more closed, and the final "s" is often pronounced as a "sh" sound ([ʃ]).

Brazilian Portuguese Examples:

1. Eu li duzentas páginas ontem. (I read two hundred pages yesterday.)
2. Tem duzentas pessoas na festa. (There are two hundred people at the party.)
3. Ela comprou duzentas balas de goma. (She bought two hundred gummy candies.)
4. As duzentas crianças estão animadas. (The two hundred children are excited.)
5. Eu vi duzentas fotos no seu celular. (I saw two hundred photos on your cell phone.)

Continental Portuguese Examples:

1. Li duzentas páginas ontem. (I read two hundred pages yesterday.)
2. Há duzentas pessoas na festa. (There are two hundred people at the party.)
3. Ela comprou duzentas gomas. (She bought two hundred gummies.)
4. As duzentas crianças estão animadas. (The two hundred children are excited.)
5. Vi duzentas fotos no seu telemóvel. (I saw two hundred photos on your mobile phone.)