Caiza-Llambo, M.M. 2023. Importance of the development of skills in addition and subtraction of fractions as a methodological proposal of the teaching exercise. YUYAY: Estrategias, Metodologías & Didácticas Educativas. 2, 1 (Sep. 2023), 150–162. DOI:https://doi.org/10.59343/yuyay.v2i1.32.