This study examined the mathematics instructions in the five selected countries in Asia, namely Singapore, Shanghai-China, Malaysia, Japan, and the Philippines. A comparative analysis compared mathematics instructions regarding policy, curriculum, teacher training, teacher qualification, and innovations. The data used were based on policies on mathematics instruction and national reports, which relevant professional experts of the selected countries verified. Results showed significant similarities and differences in the mathematics instructions selected in Asia. However, among the five selected countries, Singapore had shown excellence in policy, curriculum, teacher training, teacher qualification, and innovations in achieving quality math education. Hence, adapting relevant policies and practices may improve mathematics instruction across countries.