The aim of this work is to determine the extent to which the cultural context of a word problem influences its solution by pupils of the 9th grade of secondary schools. Two research questions were set. The first: Will the different cultural context affect the solution of the word problem? How? The second: What do pupils think about word problems with different cultural contexts? The thesis consists of two parts: the theoretical and the practical. In the theoretical part, the general concepts such as culture and the word problem are addressed, followed by a discussion of the cultural context of word problems and their analysis in chosen textbooks. Furthermore, a significant part is devoted to ethnomathematics and multiculturalism in Czech schools. Finally, the difference between the word problem with a typical Czech context and the word problem with a different cultural context is established based on the results of textbooks analysis and the pre-research. The research, which is described in the practical part was conducted qualitatively, and the data were obtained from written tests and semi-structured interviews. The results have shown that the different cultural context of a word problem affects the time needed to solve the problem. In addition, the choice of the type of solution and the type of...