{"common":{"save":0,"post_id":"7650","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1455","post_id":"7650","mon_id":"1159414","chapter_id":"1159448","question":"<p>73100 ha =&nbsp;&lt;input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/&gt;&nbsp;km&sup2;.<\/p>","options":"","correct":["[\"731\"]"],"level":"2","hint":"<p>100 ha = 1 km&sup2;<\/p>","answer":"<p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n l&agrave; <span style=\"color:#16a085;\"><strong>731<\/strong><\/span>.<\/p><p>73100 ha = <span style=\"color:#16a085;\"><strong>731<\/strong><\/span> km&sup2;.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-15 09:49:03"},{"id":"1457","post_id":"7650","mon_id":"1159414","chapter_id":"1159448","question":"<p>&lt;input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/&gt;&nbsp;ha = 910 000 m&sup2;.<\/p>","options":"","correct":["[\"91\"]"],"level":"2","hint":"<p>1 ha = 10 000 m&sup2;<\/p>","answer":"<p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n l&agrave; <span style=\"color:#16a085;\"><strong>91<\/strong><\/span>.<\/p><p><span style=\"color:#16a085;\"><strong>91<\/strong><\/span> ha = 910 000 m&sup2;.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-15 09:51:08"},{"id":"1459","post_id":"7650","mon_id":"1159414","chapter_id":"1159448","question":"<p>M\u1ed9t c&aacute;i ao c&aacute; h&igrave;nh vu&ocirc;ng c&oacute; \u0111\u1ed9 d&agrave;i c\u1ea1nh 10m. Di\u1ec7n t&iacute;ch ao c&aacute; \u0111&oacute; l&agrave;:<\/p>","options":["<strong>A.<\/strong> 100 ha","<strong>B.<\/strong> 0,01 ha","<strong>C.<\/strong> 100 km&sup2;","<strong>D.<\/strong> 10 km&sup2;"],"correct":"2","level":"2","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> 0,01 ha.<\/span><\/p><p>Di\u1ec7n t&iacute;ch ao c&aacute; l&agrave; 10 x 10 = 100 (m&sup2;) = 0,01 (ha) = 0,0001 (km&sup2;).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-15 09:55:44","option_type":"txt","len":1}]}