It has been reported that a noticeable high percentage (33%) of students with mathematics learning difficulties (MLD) in Tibet can partly be explained by the current state of mathematics teaching. This study investigated the errors the Tibetan seventh grade students (N = 30) with MLD made in mathematics tasks. A novel Mathematics Error Pattern Identification Test (MEPIT) was used, identifying eight different error types: visual-spatial, comprehension, transformation, relevance, fact, procedural, measurement, and presentation errors. The most frequent error types among Tibetan students found were fact and comprehension errors. Compared to boys, girls seemed to be more vulnerable to fact and relevance errors. No significant differences were found between students from rural and urban school, except rural school students made more comprehension errors. The novel measure of MEPIT could serve as a screening tool for Tibetan teachers to identify the errors students make in mathematics tasks, and to take these into consideration in their teaching to meet the learning needs of the students.