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

Yes

The word "calculadoras" is identical in spelling, meaning, and grammar in both Brazilian and Continental Portuguese. The only difference lies in pronunciation. In Brazil, the vowels tend to be more "open" and the rhythm is more melodic. In Portugal, vowels that are unstressed (like the final "a" in "calculadoras") are often "closed" or almost swallowed, leading to a more consonant-heavy sound.

Brazilian Portuguese Examples

1. Você trouxe as calculadoras para a aula? (Did you bring the calculators for the class?)
2. Eu preciso comprar umas calculadoras novas. (I need to buy some new calculators.)
3. Essas calculadoras são muito simples de usar. (These calculators are very simple to use.)
4. A gente vai usar as calculadoras para o exercício. (We are going to use the calculators for the exercise.)
5. As calculadoras do escritório estão quebradas. (The office calculators are broken.)

Continental Portuguese Examples

1. Trouxeste as calculadoras para a aula? (Did you bring the calculators for the class?)
2. Vou comprar umas calculadoras novas. (I'm going to buy some new calculators.)
3. Estas calculadoras são muito simples de usar. (These calculators are very simple to use.)
4. Nós vamos usar as calculadoras para o exercício. (We are going to use the calculators for the exercise.)
5. As calculadoras do escritório estão avariadas. (The office calculators are broken/out of order.)