{"common":{"save":0,"post_id":"7628","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1257","post_id":"7628","mon_id":"1159414","chapter_id":"1159417","question":"<p><span class=\"math-tex\">$\\dfrac{1}{2}$<\/span> th\u1ebf k\u1ec9 b\u1eb1ng:<\/p>","options":["<strong>A.<\/strong> 5 n\u0103m","<strong>B.<\/strong> 10 n\u0103m","<strong>C.<\/strong> 20 n\u0103m","<strong>D.<\/strong> 50 n\u0103m"],"correct":"4","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 50 n\u0103m<\/span><\/p><p>- \u0110\u1ed5i: 1 th\u1ebf k\u1ec9 = 100 n\u0103m<\/p><p>- Do \u0111ó <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span> th\u1ebf k\u1ec9 b\u1eb1ng: <\/p><p> <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span> x 100 = 50 n\u0103m<\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"0","date":"2024-09-11 00:43:17","option_type":"txt","len":0},{"id":"1258","post_id":"7628","mon_id":"1159414","chapter_id":"1159417","question":"<p>6000 kg = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> t\u1ea5n<\/p>","options":"","correct":["[\"6\"]"],"level":"1","hint":"<p>1000 kg = 1 t\u1ea5n<\/p>","answer":"<p>\u0110\u1ed5i: 6000 kg = 6 t\u1ea5n<\/p><p>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>6<\/strong><\/span>.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-11 00:44:31"},{"id":"1259","post_id":"7628","mon_id":"1159414","chapter_id":"1159417","question":"<p>8 gi\u1edd 5 phút = <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/> gi\u1edd<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{8}{12}$<\/span> gi\u1edd","<strong>B.<\/strong> 85 gi\u1edd","<strong>C.<\/strong> <span class=\"math-tex\">$8\\dfrac{1}{12}$<\/span> gi\u1edd","<strong>D.<\/strong> <span class=\"math-tex\">$8\\dfrac{1}{60}$<\/span> gi\u1edd"],"correct":"3","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$8\\dfrac{1}{12}$<\/span> gi\u1edd<\/span><\/p><p>\u0110\u1ed5i: 1 gi\u1edd = 60 phút hay 1 phút = <span class=\"math-tex\">$\\dfrac{1}{60}$<\/span> gi\u1edd<\/p><p>Do \u0111ó 5 phút = <span class=\"math-tex\">$\\dfrac{5}{60}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{1}{12}$<\/span> gi\u1edd<\/p><p>V\u1eady 8 gi\u1edd 5 phút = 8 gi\u1edd + 5 phút = 8 gi\u1edd + <span class=\"math-tex\">$\\dfrac{1}{12}$<\/span> gi\u1edd = <span style=\"color:#16a085;\"><span class=\"math-tex\">$8\\dfrac{1}{12}$<\/span> gi\u1edd<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-11 00:49:03","option_type":"math","len":0}]}