{"common":{"save":0,"post_id":"8510","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4719","post_id":"8510","mon_id":"1159414","chapter_id":"1159498","question":"<p>\u0110\u01a1n v\u1ecb nào d\u01b0\u1edbi \u0111ây <strong>không<\/strong> ph\u1ea3i \u0111\u01a1n v\u1ecb \u0111o th\u1eddi gian?<\/p>","options":["<strong>A.<\/strong> Th\u1ebf k\u1ec9.","<strong>B.<\/strong> Phút.","<strong>C.<\/strong> Tháng.","<strong>D.<\/strong> T\u1ea5n."],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> T\u1ea5n.<\/span><\/p><p>Các \u0111\u01a1n v\u1ecb \u0111o th\u1eddi gian là th\u1ebf k\u1ec9, phút, tháng.<\/p><p>T\u1ea5n là \u0111\u01a1n v\u1ecb \u0111o kh\u1ed1i l\u01b0\u1ee3ng.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-08 08:44:11","option_type":"txt","len":2},{"id":"4722","post_id":"8510","mon_id":"1159414","chapter_id":"1159498","question":"<p>\u0110\u1ed5i các \u0111\u01a1n v\u1ecb \u0111o th\u1eddi gian sau:<\/p><p>15 phút 30 giây = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> giây<\/p><p>2 gi\u1edd 45 phút = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> phút<\/p>","options":"","correct":["[\"930\",\"165\"]"],"level":"1","hint":"<p>1 phút = 60 giây<\/p><p>1 gi\u1edd = 60 phút<\/p>","answer":"<p>15 phút 30 giây = 15 x 60 + 30 = <strong>930<\/strong> giây.<\/p><p>2 gi\u1edd 45 phút = 2 x 60 + 45 = <strong>165<\/strong> phút .<\/p><p>V\u1eady các s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t là <span style=\"color:#16a085;\"><strong>930<\/strong><\/span> và <span style=\"color:#16a085;\"><strong>165<\/strong><\/span>.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2025-04-08 08:50:34"},{"id":"4723","post_id":"8510","mon_id":"1159414","chapter_id":"1159498","question":"<p>\u0110\u1ed5i: 81 giây = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/> phút.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{27}{20}$<\/span>.","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{20}{27}$<\/span>.","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{27}{60}$<\/span>.","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{81}{20}$<\/span>."],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{27}{20}$<\/span>.<\/span><\/p><p>81 giây = <span class=\"math-tex\">$\\dfrac{81}{60}=\\dfrac{27}{20}$<\/span> phút.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-04-08 08:53:20","option_type":"math","len":0}]}