{"common":{"save":0,"post_id":"7557","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1073","post_id":"7557","mon_id":"1159414","chapter_id":"1159417","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span style=\"color:#2980b9;\"><strong>897 x 548 x (246 – 123 x 2)<\/strong><\/span> b\u1eb1ng<\/p>","options":["<strong>A.<\/strong> 54 832","<strong>B.<\/strong> 0","<strong>C.<\/strong> 504 832","<strong>D.<\/strong> 504 830"],"correct":"2","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 0<\/span><\/p><p>897 x 548 x (246 – 123 x 2)<\/p><p>= 897 x 548 x (246 – 246)<\/p><p>= 897 x 548 x 0<\/p><p>= 0<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-13 12:41:09","option_type":"txt","len":0},{"id":"1075","post_id":"7557","mon_id":"1159414","chapter_id":"1159417","question":"<p>M\u1ed9t m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt có di\u1ec7n tích b\u1eb1ng di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t hình vuông c\u1ea1nh 90m. Tính chu vi m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt \u0111ó, bi\u1ebft r\u1eb1ng chi\u1ec1u dài m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt là 135m.<\/p>","options":["<strong>A.<\/strong> 390m","<strong>B.<\/strong> 380m","<strong>C.<\/strong> 370m","<strong>D.<\/strong> 360m"],"correct":"1","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 390m<\/span><\/p><p>Di\u1ec7n tích m\u1ea3nh \u0111\u1ea5t hình vuông là:<\/p><p>90 x 90 = 8 100 (m²)<\/p><p>Chi\u1ec1u r\u1ed9ng c\u1ee7a m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt là:<\/p><p>8100 : 135 = 60 (m)<\/p><p>Chu vi m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt là:<\/p><p>(135 + 60) x 2 = 390 (m)<\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"0","date":"2024-08-13 12:44:02","option_type":"txt","len":0},{"id":"1076","post_id":"7557","mon_id":"1159414","chapter_id":"1159417","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span style=\"color:#2980b9;\"><strong>(540 – 240) x ( 127 – 42 x 3)<\/strong><\/span> b\u1eb1ng:<\/p>","options":["<strong>A.<\/strong> 3000","<strong>B.<\/strong> 2000","<strong>C.<\/strong> 20 000","<strong>D.<\/strong> 300"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 300<\/span><\/p><p>(540 – 240) x ( 127 – 42 x 3)<\/p><p>= 300 x (127 – 126)<\/p><p>= 300 x 1<\/p><p>= 300<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-15 11:43:01","option_type":"txt","len":0}]}