{"common":{"save":0,"post_id":"8907","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4812","post_id":"8907","mon_id":"1159414","chapter_id":"1159498","question":"<p>M\u1ed9t xe &ocirc; t&ocirc; \u0111i v\u1edbi v\u1eadn t\u1ed1c 80 km\/h. Qu&atilde;ng \u0111\u01b0\u1eddng &ocirc; t&ocirc; \u0111&oacute; \u0111i \u0111\u01b0\u1ee3c trong 0,5 gi\u1edd l&agrave;:<\/p>","options":["<strong>A.<\/strong> 40 km.","<strong>B.<\/strong> 50 km.","<strong>C.<\/strong> 80 km\/h.","<strong>D.<\/strong> 40 km\/h."],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong> 40 km.<\/span><\/p><p>Qu&atilde;ng \u0111\u01b0\u1eddng &ocirc; t&ocirc; \u0111i \u0111\u01b0\u1ee3c trong 0,5 gi\u1edd l&agrave;:<\/p><p>80 x 0,5 = 40 (km).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-18 08:11:05","option_type":"txt","len":1},{"id":"4813","post_id":"8907","mon_id":"1159414","chapter_id":"1159498","question":"<p>Mu\u1ed1n t&iacute;nh qu&atilde;ng \u0111\u01b0\u1eddng, ta l\u1ea5y v\u1eadn t\u1ed1c&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;th\u1eddi gian.<\/p>","options":["<strong>A.<\/strong> c\u1ed9ng v\u1edbi.","<strong>B.<\/strong> nh&acirc;n v\u1edbi.","<strong>C.<\/strong> tr\u1eeb \u0111i.","<strong>D.<\/strong> chia cho."],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;nh&acirc;n v\u1edbi.<\/span><\/p><p>Mu\u1ed1n t&iacute;nh qu&atilde;ng \u0111\u01b0\u1eddng, ta l\u1ea5y v\u1eadn t\u1ed1c&nbsp;<span style=\"color:#16a085;\"><strong>nh&acirc;n v\u1edbi<\/strong><\/span>&nbsp;th\u1eddi gian.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-18 08:13:10","option_type":"txt","len":2},{"id":"4814","post_id":"8907","mon_id":"1159414","chapter_id":"1159498","question":"<p>Mu\u1ed1n t&iacute;nh th\u1eddi gian, ta l\u1ea5y qu&atilde;ng \u0111\u01b0\u1eddng&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;v\u1eadn t\u1ed1c.<\/p>","options":["<strong>A.<\/strong> c\u1ed9ng v\u1edbi.","<strong>B.<\/strong> nh&acirc;n v\u1edbi.","<strong>C.<\/strong> tr\u1eeb \u0111i.","<strong>D.<\/strong> chia cho."],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;chia cho.<\/span><\/p><p>Mu\u1ed1n t&iacute;nh th\u1eddi gian, ta l\u1ea5y qu&atilde;ng \u0111\u01b0\u1eddng&nbsp;<span style=\"color:#16a085;\"><strong>chia cho<\/strong>&nbsp;<\/span>v\u1eadn t\u1ed1c.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-18 08:14:40","option_type":"txt","len":2}]}