{"common":{"save":0,"post_id":"7665","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1577","post_id":"7665","mon_id":"1159414","chapter_id":"1159448","question":"<p>\u0110i\u1ec1n s\u1ed1 th&iacute;ch h\u1ee3p v&agrave;o ch\u1ed7 ch\u1ea5m: 9 700 000 mm&sup2; = ... m&sup2;<\/p>","options":["<strong>A.<\/strong> 97","<strong>B.<\/strong> 9,7","<strong>C.<\/strong> 907","<strong>D.<\/strong> 0,97"],"correct":"2","level":"2","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;9,7<\/span><\/p><p>9 700 000 mm&sup2; = 97 000 cm&sup2; = &nbsp;970 dm&sup2; = <span style=\"color:#16a085;\"><strong>9,7<\/strong><\/span> m&sup2;<\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"0","date":"2024-09-17 02:38:45","option_type":"txt","len":0},{"id":"1579","post_id":"7665","mon_id":"1159414","chapter_id":"1159448","question":"<p>\u0110i\u1ec1n s\u1ed1 th&iacute;ch h\u1ee3p v&agrave;o ch\u1ed7 ch\u1ea5m: 3400 cm&sup2; = &hellip; m&sup2;<\/p>","options":["<strong>A.<\/strong> 0,034","<strong>B.<\/strong> 0,0034","<strong>C.<\/strong> 0,34","<strong>D.<\/strong> 3,4"],"correct":"3","level":"2","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>C.<\/strong>&nbsp;0,34<\/span><\/p><p>3400 cm&sup2; = <span class=\"math-tex\">$\\dfrac{3400}{10000}$<\/span> m&sup2; = 0,34 m&sup2;<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-17 02:44:15","option_type":"txt","len":0},{"id":"1582","post_id":"7665","mon_id":"1159414","chapter_id":"1159448","question":"<p>\u0110i\u1ec1n v&agrave;o ch\u1ed7 ch\u1ea5m: 8m&sup2; 15 dm&sup2; = &hellip; m&sup2;<\/p>","options":["<strong>A.<\/strong> 81,5","<strong>B.<\/strong> 0,815","<strong>C.<\/strong> 815","<strong>D.<\/strong> 8,15"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;8,15<\/span><\/p><p>8 m&sup2; 15 dm&sup2; = 8 m&sup2; +&nbsp;<span class=\"math-tex\">$\\dfrac{15}{100}$<\/span>&nbsp;m&sup2; =&nbsp;<span class=\"math-tex\">$\\dfrac{815}{100}$<\/span>&nbsp;m&sup2; =&nbsp;<span style=\"color:#16a085;\"><strong>8,15<\/strong><\/span> m&sup2;<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-17 02:49:27","option_type":"txt","len":0}]}