{"common":{"save":0,"post_id":"7664","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1557","post_id":"7664","mon_id":"1159414","chapter_id":"1159448","question":"<p>\u0110i\u1ec1n s\u1ed1 thích h\u1ee3p vào ch\u1ed7 ch\u1ea5m: 820 000 mm² = … dm²<\/p>","options":["<strong>A.<\/strong> 82 000","<strong>B.<\/strong> 8200","<strong>C.<\/strong> 820","<strong>D.<\/strong> 82"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 82<\/span><\/p><p>820 000 mm² = <span class=\"math-tex\">$\\dfrac{820 \\space 000}{10\\space000}$<\/span> dm² = <span style=\"color:#16a085;\"><strong>82<\/strong><\/span> dm²<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-17 02:06:08","option_type":"txt","len":0},{"id":"1559","post_id":"7664","mon_id":"1159414","chapter_id":"1159448","question":"<p>\u0110i\u1ec1n vào ch\u1ed7 ch\u1ea5m: 12 489 m² = ... km²<\/p>","options":["<strong>A.<\/strong> 0,012489","<strong>B.<\/strong> 0,12489","<strong>C.<\/strong> 1,2489","<strong>D.<\/strong> 12,489"],"correct":"1","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 0,012489<\/span><\/p><p>12 489 m² = <span class=\"math-tex\">$\\dfrac{12\\space489}{1\\space000\\space000}$<\/span> km² = <span style=\"color:#16a085;\"><strong>0,012489<\/strong><\/span> km²<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-17 02:10:11","option_type":"txt","len":1},{"id":"1561","post_id":"7664","mon_id":"1159414","chapter_id":"1159448","question":"<p>Ch\u1ecdn \u0111\u01a1n v\u1ecb \u0111o phù h\u1ee3p v\u1edbi kích th\u01b0\u1edbc c\u1ee7a 1 t\u1edd gi\u1ea5y A3: chi\u1ec1u dài là <span style=\"color:#2980b9;\"><strong>297 …<\/strong><\/span> ; chi\u1ec1u r\u1ed9ng là <span style=\"color:#2980b9;\"><strong>420 …<\/strong><\/span><\/p>","options":["<strong>A.<\/strong> cm","<strong>B.<\/strong> mm","<strong>C.<\/strong> dm","<strong>D.<\/strong> m"],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> mm<\/span><\/p><p>Kích th\u01b0\u1edbc c\u1ee7a 1 t\u1edd gi\u1ea5y A3: chi\u1ec1u dài là <span style=\"color:#16a085;\"><strong>297 mm<\/strong><\/span>; chi\u1ec1u r\u1ed9ng là <span style=\"color:#16a085;\"><strong>420 mm<\/strong><\/span>.<\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"0","date":"2024-09-17 02:13:22","option_type":"txt","len":0}]}
