Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"6949","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2493","post_id":"6949","mon_id":"1159012","chapter_id":"1159019","question":"<p><span class=\"math-tex\">$\\dfrac{48}{80}$<\/span> = <span class=\"frac123\"><span class=\"ts\">6<\/span><span class=\"ms\"><input class=\"tim_x input_number\" type=\"text\" \/><\/span><\/span><span class=\"operator\">= <\/span><span class=\"frac123\"><span class=\"ts\"><input class=\"tim_x input_number\" type=\"text\" \/><\/span><span class=\"ms\">5<\/span><\/span><\/p>","options":"","correct":["[\"10\",\"3\"]"],"level":"3","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{48}{80}=\\dfrac{48:8}{80:8}=$<\/span> <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{6}{10}$<\/span><\/span> <span class=\"math-tex\">$=\\dfrac{6:2}{10:2}=$<\/span> <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{3}{5}$<\/span><\/span> .<\/p><p>Các s\u1ed1 c\u1ea7n \u0111i\u1ec1n t\u1eeb trái sang ph\u1ea3i l\u1ea7n l\u01b0\u1ee3t là <span style=\"color:#16a085;\"><strong>10 <\/strong><\/span>và <span style=\"color:#16a085;\"><strong>3<\/strong><\/span>.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-02-07 03:55:13"},{"id":"2496","post_id":"6949","mon_id":"1159012","chapter_id":"1159019","question":"<p>\u0110o\u1ea1n th\u1eb3ng AB dài 4 cm, \u0111o\u1ea1n th\u1eb3ng CD dài 10 cm.<\/p><p>Ch\u1ecdn câu \u0111úng.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$AB = \\dfrac{2}{5}CD$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$AB = \\dfrac{3}{5}CD$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$AB = \\dfrac{4}{5}CD$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$AB = \\dfrac{2}{3}CD$<\/span>"],"correct":"1","level":"3","hint":"","answer":"<p>Rút g\u1ecdn <span class=\"math-tex\">$\\dfrac{4}{10}=\\dfrac{4:2}{10:2}=\\dfrac{2}{5}$<\/span> .<\/p><p><span class=\"math-tex\">$AB=\\dfrac{4}{10}CD=\\dfrac{2}{5}CD$<\/span>.<\/p><p>Ch\u1ecdn<span style=\"color:#16a085;\"> <strong>A.<\/strong> <span class=\"math-tex\">$AB = \\dfrac{2}{5}CD$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 04:02:09","option_type":"math","len":0},{"id":"2498","post_id":"6949","mon_id":"1159012","chapter_id":"1159019","question":"<p>Có m\u1ed9t cái bánh kem. Mai \u0103n <span class=\"math-tex\">$\\dfrac{1}{6}$<\/span> cái bánh, Hoa \u0103n <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> cái bánh và Nam \u0103n <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span> cái bánh. H\u1ecfi b\u1ea1n nào \u0103n nhi\u1ec1u nh\u1ea5t, b\u1ea1n nào \u0103n ít nh\u1ea5t?<\/p>","options":["<strong>A.<\/strong> Hoa \u0103n nhi\u1ec1u nh\u1ea5t, Nam \u0103n ít nh\u1ea5t.","<strong>B.<\/strong> Hoa \u0103n nhi\u1ec1u nh\u1ea5t, Mai \u0103n ít nh\u1ea5t.","<strong>C.<\/strong> Nam \u0103n nhi\u1ec1u nh\u1ea5t, Mai \u0103n ít nh\u1ea5t.","<strong>D.<\/strong> Mai \u0103n nhi\u1ec1u nh\u1ea5t, Nam \u0103n ít nh\u1ea5t."],"correct":"3","level":"3","hint":"<p>Trong hai phân s\u1ed1 có cùng t\u1eed s\u1ed1, phân s\u1ed1 nào có m\u1eabu nh\u1ecf h\u01a1n thì l\u1edbn h\u01a1n.<\/p>","answer":"<p>Vì c\u1ea3 ba phân s\u1ed1 có chung t\u1eed s\u1ed1 là 1 và 2 < 4 < 6 nên <span class=\"math-tex\">$\\dfrac{1}{2}>\\dfrac{1}{4}>\\dfrac{1}{6}$<\/span> .<\/p><p>Do \u0111ó Nam \u0103n nhi\u1ec1u nh\u1ea5t, Mai \u0103n ít nh\u1ea5t.<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> Nam \u0103n nhi\u1ec1u nh\u1ea5t, Mai \u0103n ít nh\u1ea5t.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 04:07:49","option_type":"txt","len":2}]}