Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"8362","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4126","post_id":"8362","mon_id":"1159414","chapter_id":"1159495","question":"<p>Trên b\u1ea3n \u0111\u1ed3 t\u1ec9 l\u1ec7 1 : 500, m\u1ed9t m\u1ea3nh \u0111\u1ea5t hình ch\u1eef nh\u1eadt có chi\u1ec1u dài là 8 cm và chi\u1ec1u r\u1ed9ng là 6 cm. Di\u1ec7n tích th\u1ef1c t\u1ebf c\u1ee7a m\u1ea3nh \u0111\u1ea5t \u0111ó là bao nhiêu mét vuông?<\/p>","options":["<strong>A.<\/strong> 4800 m²","<strong>B.<\/strong> 2400 m²","<strong>C.<\/strong> 3600 m²","<strong>D.<\/strong> 1200 m²"],"correct":"4","level":"3","hint":"","answer":"<p><span style=\"color:#16a085;\"><\/span>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 1200 m²<\/span><\/p><p>Trên th\u1ef1c t\u1ebf, chi\u1ec1u dài c\u1ee7a m\u1ea3nh \u0111\u1ea5t là:<\/p><p>8 x 500 = 4000 (cm)<\/p><p>Trên th\u1ef1c t\u1ebf, chi\u1ec1u r\u1ed9ng c\u1ee7a m\u1ea3nh \u0111\u1ea5t là:<\/p><p>6 x 500 = 3000 (cm)<\/p><p>\u0110\u1ed5i: 4000 cm = 40 m; 3000 cm = 30 m.<\/p><p>Trên th\u1ef1c t\u1ebf, di\u1ec7n tích c\u1ee7a m\u1ea3nh \u0111\u1ea5t là:<\/p><p>40 x 30 = <strong><span style=\"color:#16a085;\">1200 (m²)<\/span><\/strong><\/p><p>\u0110áp s\u1ed1: <b>1200 m²<\/b><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-01-26 07:50:53","option_type":"txt","len":1},{"id":"4128","post_id":"8362","mon_id":"1159414","chapter_id":"1159495","question":"<p>M\u1ed9t th\u1eeda ru\u1ed9ng hình vuông có chu vi là 96 m. Trên b\u1ea3n \u0111\u1ed3 t\u1ec9 l\u1ec7 1 : 1000, \u0111\u1ed9 dài c\u1ea1nh c\u1ee7a th\u1eeda ru\u1ed9ng \u0111ó là bao nhiêu x\u0103ng-ti-mét?<\/p>","options":["<strong>A.<\/strong> 24 cm","<strong>B.<\/strong> 2,4 cm","<strong>C.<\/strong> 1,2 cm","<strong>D.<\/strong> 4,8 cm"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 2,4 cm<\/span><\/p><p>\u0110\u1ed9 dài c\u1ea1nh c\u1ee7a th\u1eeda ru\u1ed9ng trên th\u1ef1c t\u1ebf là:<\/p><p>96 : 4 = 24 (m)<\/p><p>\u0110\u1ed5i: 24 m = 2400 cm<\/p><p>Trên b\u1ea3n \u0111\u1ed3 t\u1ec9 l\u1ec7 1 : 1000, \u0111\u1ed9 dài c\u1ea1nh c\u1ee7a th\u1eeda ru\u1ed9ng \u0111ó là:<\/p><p>2400 : 1000 = <span style=\"color:#16a085;\">2,4 (cm)<\/span><\/p><p>\u0110áp s\u1ed1: <strong>2,4 cm<\/strong><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-01-26 08:00:39","option_type":"txt","len":0},{"id":"4131","post_id":"8362","mon_id":"1159414","chapter_id":"1159495","question":"<p>N\u1ed1i các \u0111\u1ed9 dài (\u0111\u01a1n v\u1ecb cm) trên b\u1ea3n \u0111\u1ed3 t\u1ec9 l\u1ec7 1 : 2000 v\u1edbi \u0111\u1ed9 dài t\u01b0\u01a1ng \u1ee9ng trên th\u1ef1c t\u1ebf (\u0111\u01a1n v\u1ecb m).<\/p>","options":[["5 cm \u1ee9ng v\u1edbi","3,5 cm \u1ee9ng v\u1edbi ","6 cm \u1ee9ng v\u1edbi"],["70 m","120 m","100 m"],["100 m","70 m","120 m"]],"correct":[1,2,0],"level":"3","hint":"","answer":"<p><strong><span style=\"color:#16a085;\">5 cm \u1ee9ng v\u1edbi<\/span><\/strong><span style=\"color:#16a085;\"> <\/span>5 x 2000 = 10 000 cm = <strong><span style=\"color:#16a085;\">100 m<\/span><\/strong><\/p><p><span style=\"color:#c0392b;\"><strong>3,5 cm \u1ee9ng v\u1edbi<\/strong> <\/span>3,5 x 2000 = 7000 cm = <span style=\"color:#c0392b;\"><strong>70 m<\/strong><\/span><\/p><p><span style=\"color:#8e44ad;\"><strong>6 cm \u1ee9ng v\u1edbi<\/strong><\/span><span style=\"color:#16a085;\"> <\/span>6 x 2000 = 12 000 cm = <span style=\"color:#8e44ad;\"><strong>120 m<\/strong><\/span><\/p>","type":"matching","extra_type":"mat_txt","time":"0","user_id":"131","test":"0","date":"2025-01-26 08:09:03"}]}