Lớp 3 - Kiểm tra tháng 2

[{"a":4,"b":4,"c":4,"d":1,"ab":7,"bb":5,"cb":5,"db":2},{"so2":5,"so1":7380},{"a":1881,"m":9421,"n":3},{"so2":7,"so1":3409},{"a":4,"b":4,"d":112},{"so":15},{"type":0,"ans":19,"list":[18,17,19]},{"gio":8,"giay":0,"phut":40,"kieuchu":0,"giocanchinh":8,"phutcanchinh":30,"help":false},{"a":4,"m":3,"n":29},{"a":6,"m":5,"n":3}]

[["4441","7552"],"1476",{"ans1":"1881x3=5643","ans2":"9421-5643=3778","ans3":"3778"},"487","21","XV","XIX",{"uansHour":8,"uansMinute":30},"29","18"]