{"common":{"save":0,"post_id":"6860","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1953","post_id":"6860","mon_id":"1159012","chapter_id":"1159015","question":"<p>T&iacute;nh b\u1eb1ng c&aacute;ch thu\u1eadn ti\u1ec7n<\/p><p><span style=\"color:#2980b9;\"><strong>2 x 1805 x 5&nbsp; &nbsp;=&nbsp; &nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&nbsp;<\/strong><\/span><\/p>","options":["<strong>A.<\/strong> 18050","<strong>B.<\/strong> 1805","<strong>C.<\/strong> 180500","<strong>D.<\/strong> 1850"],"correct":"1","level":"3","hint":"","answer":"<p>&nbsp; &nbsp; 2 x 1805 x 5&nbsp;<\/p><p>= (2 x 5) x 1805<\/p><p>=&nbsp; &nbsp; 10&nbsp; &nbsp; x 1805<\/p><p>=&nbsp; &nbsp; &nbsp; &nbsp;18050<\/p><p>Ch\u1ecdn&nbsp; &nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong> 18050.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-12-17 01:38:06","option_type":"txt","len":0},{"id":"1955","post_id":"6860","mon_id":"1159012","chapter_id":"1159015","question":"<p>T&iacute;nh b\u1eb1ng c&aacute;ch thu\u1eadn ti\u1ec7n<\/p><p><span style=\"color:#8e44ad;\"><strong>2 x 5&nbsp;x 600&nbsp;<\/strong><\/span><\/p>","options":["<strong>A.<\/strong> 60","<strong>B.<\/strong> 600","<strong>C.<\/strong> 6000","<strong>D.<\/strong> 60000"],"correct":"3","level":"3","hint":"","answer":"<p>&nbsp; &nbsp; 2 x 5&nbsp; x 600<\/p><p>= (2 x 5)&nbsp;x 600<\/p><p>=&nbsp; &nbsp;10&nbsp; &nbsp; x 600<\/p><p>=&nbsp; &nbsp; &nbsp;6000<\/p><p>Ch\u1ecdn&nbsp; &nbsp;<span style=\"color:#16a085;\">&nbsp;<strong>C.<\/strong> 6000.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-12-17 01:41:51","option_type":"txt","len":0},{"id":"1960","post_id":"6860","mon_id":"1159012","chapter_id":"1159015","question":"<p>M\u1ed9t h&igrave;nh vu&ocirc;ng c&oacute; \u0111\u1ed9 d&agrave;i m\u1ed9t c\u1ea1nh l&agrave; 400 cm. H\u1ecfi h&igrave;nh vu&ocirc;ng \u0111&oacute; c&oacute; di\u1ec7n t&iacute;ch b\u1eb1ng bao nhi&ecirc;u m&eacute;t vu&ocirc;ng?<\/p>","options":["<strong>A.<\/strong> 160 m&sup2;","<strong>B.<\/strong> 16 m&sup2;","<strong>C.<\/strong> 1600 m&sup2;","<strong>D.<\/strong> 16000 m&sup2;"],"correct":"2","level":"3","hint":"<p>\u0110\u1ed5i 400 cm = 4 m (v&igrave; 400 : 100 = 4).<\/p>","answer":"<p>\u0110\u1ed5i 400 cm = 4 m (v&igrave; 400 : 100 = 4).<\/p><p>Di\u1ec7n t&iacute;ch c\u1ee7a h&igrave;nh vu&ocirc;ng l&agrave;:<\/p><p>&nbsp; 4 x 4 = 16 (m&sup2;)<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong> 16 m&sup2;.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2023-12-17 01:54:07","option_type":"txt","len":2}]}