{"common":{"save":0,"post_id":"7633","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1324","post_id":"7633","mon_id":"1159414","chapter_id":"1159417","question":"<p>6916 : (113 + 20) x 2 = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["<strong>A.<\/strong> 104","<strong>B.<\/strong> 114","<strong>C.<\/strong> 26","<strong>D.<\/strong> 46"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 104.<\/span><\/p><p>6916 : (113 + 20) x 2 <\/p><p>= 6916 : 133 x 2<\/p><p>= 52 x 2<\/p><p>= 104.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-12 02:51:48","option_type":"txt","len":0},{"id":"1326","post_id":"7633","mon_id":"1159414","chapter_id":"1159417","question":"<p>Trung bình c\u1ed9ng s\u1ed1 k\u1eb9o c\u1ee7a ba b\u1ea1n Mai, Lan, Hoa là 30 chi\u1ebfc. Bi\u1ebft n\u1ebfu không tính s\u1ed1 k\u1eb9o c\u1ee7a Mai thì trung bình c\u1ed9ng s\u1ed1 k\u1eb9o c\u1ee7a Lan và Hoa là 24 chi\u1ebfc. S\u1ed1 k\u1eb9o c\u1ee7a Mai là:<\/p>","options":["<strong>A.<\/strong> 28 chi\u1ebfc","<strong>B.<\/strong> 32 chi\u1ebfc","<strong>C.<\/strong> 36 chi\u1ebfc","<strong>D.<\/strong> 42 chi\u1ebfc"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 42 chi\u1ebfc.<\/span><\/p><p>T\u1ed5ng s\u1ed1 k\u1eb9o c\u1ee7a Mai, Lan, Hoa là: 30 x 3 = 90 (chi\u1ebfc).<br \/>T\u1ed5ng s\u1ed1 k\u1eb9o c\u1ee7a Lan và Hoa là: 24 x 2 = 48 (chi\u1ebfc).<br \/>S\u1ed1 k\u1eb9o c\u1ee7a Mai là: 90 – 48 = 42 (chi\u1ebfc).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-12 02:54:18","option_type":"txt","len":1},{"id":"1328","post_id":"7633","mon_id":"1159414","chapter_id":"1159417","question":"<p>M\u1ed9t hình ch\u1eef nh\u1eadt có chu vi 56 m. N\u1ebfu gi\u1ea3m chi\u1ec1u dài 8 m thì hình ch\u1eef nh\u1eadt \u0111ó tr\u1edf thành hình vuông. Di\u1ec7n tích hình ch\u1eef nh\u1eadt là:<\/p>","options":["<strong>A.<\/strong> 120 m²","<strong>B.<\/strong> 180 m²","<strong>C.<\/strong> 160 m²","<strong>D.<\/strong> 200 m²"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 180 m².<\/span><\/p><p>N\u1eeda chu vi hình ch\u1eef nh\u1eadt là: 56 : 2 = 28 (m).<br \/>Chi\u1ec1u dài hình ch\u1eef nh\u1eadt là: (28 + 8) : 2 = 18 (m).<br \/>Chi\u1ec1u r\u1ed9ng hình ch\u1eef nh\u1eadt là: 28 – 18 = 10 (m).<br \/>Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt là: 18 x 10 = 180 (m²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-12 02:57:58","option_type":"txt","len":1}]}