This article examines the problem of developing financial literacy among the population, especially among students in secondary schools. The need and methods for improving financial literacy are discussed, with particular emphasis on the subject of mathematics. The article emphasizes the relevance of including the formation of basic financial literacy skills as an important aspect of educating the new generation in the curricula of various school subjects. Ways to integrate financial literacy skills into mathematics instruction are also explored. In the context of mathematics lessons, tasks with real financial and economic content are proposed, aimed at developing basic financial literacy skills among students in grades 5-6. These tasks contribute to the development of basic financial and economic concepts that reflect key aspects of financial relations, as well as the development of practical skills and competencies. Because mathematics and finance share common aspects, using math problems with a financial context helps expand students' understanding of the real-life applications of mathematics in everyday life. The article also demonstrates that knowledge of basic financial concepts and their application in practice contribute to the development of understanding that can contribute to the development of thrift and sound money management skills. The effectiveness of this process is confirmed by the results of experiments conducted in the article.