Mathematics is an important nature exploration tool used by all natural sciences. So it is usual that mathematical calculations are part of school science education. But how are these calculations perceived by the learners themselves? What are their attitudes to this part of the teaching process? The answer to this question is important for any teacher who seeks to improve her/his teaching experience. The paper deals with the research of learners' attitudes towards using mathematical calculations within physics lessons. Semantic differential for the sample of 230 primary and secondary school pupils was used in order to determine their attitudes towards this aspect and investigate the influence of grade and gender on the attitudes. The analysis of acquired data shows slightly negative learners' attitude to the mathematical calculations and some particular differences between grades and genders.