2025-02-252025-02-252023SILVA, Orivelton Cristian Medeiros da. A matemática básica e o direito do consumidor: o uso da razão e proporção em postos de gasolina. Orientador: Francisco Paulo Marques Lopes. 2023. 37 f. Trabalho de Conclusão de Curso (Licenciatura em Matemática) – Faculdade de Matemática, Instituto de Ciências Exatas e Naturais, Universidade Federal do Pará, Belém, 2023. Disponível em:. Acesso em:.https://bdm.ufpa.br/jspui/handle/prefix/7738The theme of this paper is "Basic Mathematics and Consumer Rights: the use of reason and proportion in gas stations." It was evaluated how mathematics can be an important tool in everyday life, not only applicable in the classroom but also in various practical environments. For the writing of this paper, the applied research was of bibliographic type, where the consulted documents were the National Common Curricular Base (BNCC) and the National Curriculum Parameters (PCN). In addition to these two documents, which guide the curricula of public and private schools in Brazil, the Consumer Protection Code (CDC) governed by Law No. 8,078 of September 11, 1990 was also used. This is because it is urgent to combine mathematics and laws, as mathematics allows consumers to understand prices and quantities involved in transactions, while the CDC provides protection and legal support in case of problems or discrepancies in gas station operations. Together, these two aspects ensure a balanced and transparent relationship between commercial establishments and consumers, promoting trust and safety in fuel transactions. It was concluded that basic mathematics, especially the topic of reason and proportion, proved to be a useful instrument in this process of inspection and conscious consumption.Acesso AbertoÁlcool ou gasolinaEducação financeiraRazão e proporçãoDireito do consumidorConsciência financeiraAlcohol or gasolineFinancial educationReason and proportionConsumer rightsFinancial awarenessCNPQ::CIENCIAS EXATAS E DA TERRA::MATEMATICATrabalho de Curso - Graduação - Monografia