{"common":{"save":0,"post_id":"7740","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2038","post_id":"7740","mon_id":"1159414","chapter_id":"1159461","question":"<p>42000 cm² = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> m².<\/p>","options":"","correct":["[\"4,2\"]"],"level":"1","hint":"","answer":"<p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>4,2<\/strong><\/span>.<\/p><p>42000 cm² = 42000 : 10000 m² = 4,2 m².<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-29 02:53:08"},{"id":"2040","post_id":"7740","mon_id":"1159414","chapter_id":"1159461","question":"<p>0,04 ha = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> m².<\/p>","options":"","correct":["[\"400\"]"],"level":"1","hint":"","answer":"<p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>400<\/strong><\/span>.<\/p><p>0,04 ha = 0,04 x 10000 m² = 400 m².<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-29 02:55:03"},{"id":"2042","post_id":"7740","mon_id":"1159414","chapter_id":"1159461","question":"<p>83000 mm² = … dm²<\/p>","options":["<strong>A.<\/strong> 8300","<strong>B.<\/strong> 830","<strong>C.<\/strong> 83","<strong>D.<\/strong> 8,3"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 8,3.<\/span><\/p><p>83000 mm² = 83000 : 10000 dm² = 8,3 dm².<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-29 02:56:58","option_type":"txt","len":0}]}