Ôn tập học kì 1

{"id":2753,"type":"document","url":"https://biteducation.easyedu.vn/sites/default/files/easyschool/upload/2025/12/de_hk1_toan_3_2025_-_cd.pdf","width":null,"height":null,"thumbnail":"https://biteducation.easyedu.vn/sites/all/themes/easyedu/images/pdf-large.png","name":"de_hk1_toan_3_2025_-_cd.pdf"}