{"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 = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> km².<\/p>","options":"","correct":["[\"731\"]"],"level":"2","hint":"<p>100 ha = 1 km²<\/p>","answer":"<p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>731<\/strong><\/span>.<\/p><p>73100 ha = <span style=\"color:#16a085;\"><strong>731<\/strong><\/span> km².<\/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><input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> ha = 910 000 m².<\/p>","options":"","correct":["[\"91\"]"],"level":"2","hint":"<p>1 ha = 10 000 m²<\/p>","answer":"<p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>91<\/strong><\/span>.<\/p><p><span style=\"color:#16a085;\"><strong>91<\/strong><\/span> ha = 910 000 m².<\/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 cái ao cá hình vuông có \u0111\u1ed9 dài c\u1ea1nh 10m. Di\u1ec7n tích ao cá \u0111ó là:<\/p>","options":["<strong>A.<\/strong> 100 ha","<strong>B.<\/strong> 0,01 ha","<strong>C.<\/strong> 100 km²","<strong>D.<\/strong> 10 km²"],"correct":"2","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 0,01 ha.<\/span><\/p><p>Di\u1ec7n tích ao cá là 10 x 10 = 100 (m²) = 0,01 (ha) = 0,0001 (km²).<\/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}]}
