This research paper, reports the findings of using problem-based learning approach in Blended Learning (BL) environment, while practicing grade 9 mathematical problems by fifty grade 9 students. This three week program was framed in contrast of traditional schooling, intending as enrichment and not remediation, for science group students’ practices in mathematics. The study was framed through formative experiment research method and practiced at public sector Higher Secondary School Jehangira district Swabi, aiming to explore the advantages and hazards of PBL model when applied in BL environment. The data was collected through an open ended self-developed questionnaire and was analyzed by using simple frequency distribution. The results achieved were mostly positive such as students found productive PBL approach through WhatsApp application like solving examples helped them in solving other problems, course work was completed timely, and using smart phone with peers in groups helped in better understanding the problems. But showed some concerns such as poor availability of network/internet services or non-affordability of having smart phone or internet packages, and parents showed unwillingness for using smart phone/internet. On the basis conclusion, it was suggested that these issues can be resolved by teaming up with parents alongside convincing head of the institute.