{"common":{"save":0,"post_id":"6788","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1186","post_id":"6788","mon_id":"1159012","chapter_id":"1159021","question":"<p>N\u1ed1i con v\u1eadt v\u1edbi s\u1ed1 cân n\u1eb7ng thích h\u1ee3p.<\/p>","options":[["Con mèo","Con bò","Con kh\u1ec9 ","Con voi"],["5 t\u1ea1","2 t\u1ea5n","2 kg","3 y\u1ebfn"],["2 kg","5 t\u1ea1","3 y\u1ebfn","2 t\u1ea5n"]],"correct":[1,3,0,2],"level":"3","hint":"","answer":"<p>\u0110áp án \u0111úng là<\/p><p><span style=\"color:#16a085;\"><strong>Con mèo n\u1eb7ng 2 kg.<\/strong><\/span><\/p><p><span style=\"color:#16a085;\"><strong>Con bò n\u1eb7ng 5 t\u1ea1.<\/strong><\/span><\/p><p><span style=\"color:#16a085;\"><strong>Con kh\u1ec9 n\u1eb7ng 3 y\u1ebfn.<\/strong><\/span><\/p><p><span style=\"color:#16a085;\"><strong>Con voi n\u1eb7ng 2 t\u1ea5n.<\/strong><\/span><\/p>","type":"matching","extra_type":"mat_txt","time":"0","user_id":"131","test":"0","date":"2023-10-22 05:25:55"},{"id":"1189","post_id":"6788","mon_id":"1159012","chapter_id":"1159021","question":"<p>M\u1ed9t con voi v\u1eeba chào \u0111\u1eddi \u1edf v\u01b0\u1eddn qu\u1ed1c gia. B\u1eb1ng cách làm tròn \u0111\u1ebfn hàng ch\u1ee5c, ng\u01b0\u1eddi qu\u1ea3n lí nói con voi \u0111ó n\u1eb7ng kho\u1ea3ng 130 kg. V\u1eady trên th\u1ef1c t\u1ebf s\u1ed1 \u0111o nào có th\u1ec3 là s\u1ed1 cân n\u1eb7ng c\u1ee7a con voi \u0111ó?<\/p>","options":["<strong>A.<\/strong> 1 t\u1ea1 23 kg","<strong>B.<\/strong> 1 t\u1ea1 2 y\u1ebfn","<strong>C.<\/strong> 1 t\u1ea1 31 kg","<strong>D.<\/strong> 1 t\u1ea1 35 kg"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"> <strong>C.<\/strong> 1 t\u1ea1 31 kg .<\/span><\/p><p>Vì 1 t\u1ea1 31 kg = 100 kg + 31 kg = 131 kg.<\/p><p>Ch\u1eef s\u1ed1 hàng \u0111\u01a1n v\u1ecb là 1 < 5 nên làm tròn xu\u1ed1ng.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-22 05:30:41","option_type":"txt","len":1},{"id":"1193","post_id":"6788","mon_id":"1159012","chapter_id":"1159021","question":"<p>M\u1ed9t chi\u1ebfc xe ch\u1edf \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u1ea5t 7 t\u1ea1 hàng hoá. Bi\u1ebft trên xe \u0111ã có 300 kg na. Ng\u01b0\u1eddi ta mu\u1ed1n x\u1ebfp thêm nh\u1eefng thùng táo lên xe, m\u1ed7i thùng cân n\u1eb7ng 5 kg. H\u1ecfi trên chi\u1ebfc xe \u0111ó có th\u1ec3 ch\u1edf thêm \u0111\u01b0\u1ee3c nhi\u1ec1u nh\u1ea5t bao nhiêu thùng táo?<\/p>","options":["<strong>A.<\/strong> 80 thùng","<strong>B.<\/strong> 70 thùng","<strong>C.<\/strong> 50 thùng","<strong>D.<\/strong> 90 thùng"],"correct":"1","level":"3","hint":"","answer":"<p>\u0110\u1ed5i 7 t\u1ea1 = 700 kg.<\/p><p>S\u1ed1 ki-lô-gam táo nhi\u1ec1u nh\u1ea5t xe có th\u1ec3 ch\u1edf thêm là 700 – 300 = 400 kg.<\/p><p>S\u1ed1 thùng táo nhi\u1ec1u nh\u1ea5t xe có th\u1ec3 ch\u1edf thêm là 400 : 5 = 80 thùng.<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 80 thùng.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-10-22 05:36:44","option_type":"txt","len":2}]}
