The current study aims to examine meanings and error types associated with pre-service elementary teachers' semi-structured problems for the multiplication and division of fractions. A total of 83 junior pre-service elementary teachers were recruited in the spring semester of the 2016-2017 academic year. A researcher-developed Problem Posing Test consisting of eight items was used to collect the data of this study. The findings indicated that the pre-service elementary teachers were not proficient in posing appropriate problems for the multiplication and division of fractions. Furthermore, while the most frequent error type found was a failure in expressing the multiplication operation in the question root for the multiplication of fractions, it was assigning natural number meaning to fractions for the division of fractions.