This study investigated the argumentation of 27 junior high school students in building their creative reasoning and the relationship between students' argumentation and their mathematical literacy skills. The data collected using mathematical literacy test and assessment rubric and were analyzed using qualitative content analysis. The study found that students tended to use simple statements than complex statements in explaining their mathematical arguments. Furthermore, the study also showed that students, in constructing their arguments, used syntax to support their problem-solving reasoning structure though it does not necessarily strengthen their correct final answer. Students with developed mathematical literacy skills tended to be creative in building their arguments, where they used not only statements but also pictures to strengthen their constructed problem-solving arguments.