Lớp 2 - Đề khảo sát giữa học kỳ I lớp 2

[{"so2":70,"so1":16},{"so1":26,"so2":83,"so3":12,"so4":60,"so5":53,"so6":11,"type":3,"da":"1"},{"so1":37,"so2":77,"so3":11,"so4":1,"so5":12,"so6":0,"type":0,"da":"1"},{"pheptinh":"+","so1":72,"so2":6,"dv":2},{"a":399,"b":68,"c":138,"d":70,"i":5},{"a":481,"b":320,"c":101,"d":50,"i":2},{"seed1":3,"seed2":8,"so1":38,"so2":27},{"seed1":5,"seed2":3,"so1":53,"so2":29},{"so":5,"missed":0},{"so1":852,"so2":620},{"type":0,"so1":4,"so2":43,"so3":47,"kq":"+"},{"a":59,"b":40,"c":19,"d":15,"e":4,"h1":3,"h2":4,"h3":6,"pos2":3,"pos3":2,"cid":0,"rnd":2},{"alpha":-4,"Xgoc":51,"Ygoc":55,"dai":33,"XSeg":52,"YSeg":49,"alphaSeg":2},{"so1":36,"so2":60,"idx":8},{"so1":71,"so2":17,"idx":12}]

["86","Nhỏ hơn","Nhỏ hơn","78","9","8","65","24","5","232","+",[0,0,1,1],"33",{"ans1":"36+60=96","ans2":"96"},{"ans1":"71-17=54","ans2":"54"}]