Reflective thinking, problem solving and probabilistic thinking are important processes in mathematics education and considered to what extent those processes can be carried out by elementary school students is essential. The study is conducted with 188 eighth grade students. As a result, no significant difference is observed in reflective thinking towards problem solving and probabilistic thinking scores according to gender. Also, no significant relationship is found between reflective thinking and probabilistic thinking. However, based on gender, random similarity dimension of probabilistic thinking test shows a low relationship with questioning dimension of Reflective Thinking Skill Scale Towards Problem Solving in terms of females.