{"common":{"save":0,"post_id":"7666","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1598","post_id":"7666","mon_id":"1159414","chapter_id":"1159448","question":"<p>M\u1ed9t m\u1ea3nh \u0111\u1ea5t hình vuông có c\u1ea1nh 6 m. Khi v\u1ebd m\u1ea3nh \u0111\u1ea5t \u0111ó trên b\u1ea3n \u0111\u1ed3 t\u1ec9 l\u1ec7 1 : 500 thì di\u1ec7n tích hình ch\u1eef nh\u1eadt \u0111ó là:<\/p>","options":["<strong>A.<\/strong> 144","<strong>B.<\/strong> 14","<strong>C.<\/strong> 14,4","<strong>D.<\/strong> 1,44"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 144<\/span><\/p><p>\u0110\u1ed5i: 6 m = 6000 mm<\/p><p>\u0110\u1ed9 dài c\u1ea1nh c\u1ee7a m\u1ea3nh \u0111\u1ea5t trên b\u1ea3n \u0111\u1ed3 là:<\/p><p>6000 : 500 = 12 (mm)<\/p><p>Di\u1ec7n tích hình ch\u1eef nh\u1eadt trên b\u1ea3n \u0111\u1ed3 là:<\/p><p>12 x 12 = 144 (mm²)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-18 01:00:07","option_type":"txt","len":0},{"id":"1600","post_id":"7666","mon_id":"1159414","chapter_id":"1159448","question":"<p>Các b\u1ea1n h\u1ecdc sinh l\u1edbp 5A d\u1ef1 \u0111\u1ecbnh làm m\u1ed9t mô hình m\u1ed9t l\u1edbp h\u1ecdc v\u1edbi t\u1ec9 l\u1ec7 1 : 20. Bi\u1ebft sàn phòng h\u1ecdc có chi\u1ec1u dài 12 m,<br \/>chi\u1ec1u r\u1ed9ng 5 m. Di\u1ec7n tích phòng h\u1ecdc trên b\u1ea3n \u0111\u1ed3 là:<\/p>","options":["<strong>A.<\/strong> 1500 dm²","<strong>B.<\/strong> 150 dm²","<strong>C.<\/strong> 15 dm²","<strong>D.<\/strong> 15000 dm²"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> 15 dm²<\/span><\/p><p>\u0110\u1ed5i: 12 m = 1200 cm, 5 m = 500 cm<\/p><p>Chi\u1ec1u dài n\u1ec1n phòng h\u1ecdc trên b\u1ea3n \u0111\u1ed3 là: 1200 : 20 = 60 (cm)<\/p><p>Chi\u1ec1u r\u1ed9ng n\u1ec1n phòng h\u1ecdc trên b\u1ea3n \u0111\u1ed3 là: 500 : 20 = 25 (cm)<\/p><p>Di\u1ec7n tích n\u1ec1n phòng h\u1ecdc trên b\u1ea3n \u0111\u1ed3 là: 60 x 25 = 1500 (cm²) = <span style=\"color:#16a085;\"><strong>15 (dm²)<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-18 01:03:55","option_type":"txt","len":2},{"id":"1602","post_id":"7666","mon_id":"1159414","chapter_id":"1159448","question":"<p>M\u1ed9t khu ngh\u1ec9 d\u01b0\u1ee1ng có hình ch\u1eef nh\u1eadt v\u1edbi chi\u1ec1u dài 150 m, chi\u1ec1u r\u1ed9ng 30 m. Khi v\u1ebd khu ngh\u1ec9 d\u01b0\u1ee1ng \u0111ó trên b\u1ea3n \u0111\u1ed3 t\u1ec9 l\u1ec7 1 : 150 thì di\u1ec7n tích mô hình khu ngh\u1ec9 d\u01b0\u1ee1ng \u0111ó là:<\/p>","options":["<strong>A.<\/strong> 200 dm²","<strong>B.<\/strong> 20 dm²","<strong>C.<\/strong> 2000 dm²","<strong>D.<\/strong> 200 cm²"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 20 dm²<\/span><\/p><p>\u0110\u1ed5i: 150 m = 15 000 cm, 30 m = 3000 cm<\/p><p>Chi\u1ec1u dài khu ngh\u1ec9 d\u01b0\u1ee1ng trên b\u1ea3n \u0111\u1ed3 là: 15 000 : 150 = 100 (cm)<\/p><p>Chi\u1ec1u r\u1ed9ng khu ngh\u1ec9 d\u01b0\u1ee1ng trên b\u1ea3n \u0111\u1ed3 là: 3000 : 150 = 20 (cm)<\/p><p>Di\u1ec7n tích mô hình khu ngh\u1ec9 d\u01b0\u1ee1ng \u0111ó là: 100 x 20 = 2000 (cm²) <span style=\"color:#16a085;\"><strong>= 20 dm²<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-18 01:07:59","option_type":"txt","len":2}]}