看跟谁比了 Micheal Ma小学四年级就AMC 10满分，进阶USAMO。

Every student representing Texas at the USAMO deserves to be very proud. However, Metroplex Math Circle is particularly proud that one of our most regular attendees is by far the youngest student on the national list.

Michael Ma, as a fourth grader received a perfect score on the AMC 10 and followed it up with a performance on the AIME that is beyond all but the best high school students.