Learning of mathematics is for important for the livelihood of the people. It is one of the significant subjects which support learning of the abilities and skills. Learning mathematical skills at the preschool level help the cognitive and psychomotor skills of the children. This is an experimental study using single group pretest treatment posttest design. The major objectives of the study to diagnose the mathematical performance of preschool students who are identified to be improved, and to assess the efficacy of multi-sensory strategiesin enhancing mathematical performance of preschool children. For this study, a sample of 15 preschool children studying at House of English who were identified poor in proficiency in mathematic ability was selected by using purposive sampling technique. Data were collected using Tools for Assessment in Early Mathematics (TEAM), Observation Sheet and Early Numerical Tasks: The findings of the studyhave revealed that efficacy of multi-sensory learning strategies was effective in enhancing mathematical achievement of preschool children.