{"common":{"save":0,"post_id":"6892","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2779","post_id":"6892","mon_id":"1159012","chapter_id":"1159027","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span class=\"math-tex\">$\\dfrac{1}{2}+\\dfrac{8}{5}\\times\\dfrac{5}{16}$<\/span> là:<\/p>","options":["<strong>A.<\/strong> 1","<strong>B.<\/strong> 2","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{2}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{2}$<\/span>"],"correct":"1","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{1}{2}+\\dfrac{8}{5}\\times\\dfrac{5}{16}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{1}{2}+\\dfrac{8\\times5}{5\\times16}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{1}{2}+\\dfrac{1\\times1}{1\\times2}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{1}{2}+\\dfrac{1}{2}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{2}{2}$<\/span><\/p><p>= 1<\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 1<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-14 03:05:58","option_type":"math","len":0},{"id":"2781","post_id":"6892","mon_id":"1159012","chapter_id":"1159027","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span class=\"math-tex\">$\\dfrac{26}{25}\\times \\dfrac{25}{13} \\times \\dfrac{5}{4}$<\/span> là:<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{2} $<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{7}{2} $<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{5} $<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{2} $<\/span>"],"correct":"4","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{26}{25}\\times \\dfrac{25}{13} \\times \\dfrac{5}{4}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{26 \\times 25 \\times 5}{25 \\times 13 \\times 4} $<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{2 \\times 1 \\times 5}{1 \\times 1 \\times 4} $<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{1 \\times 1 \\times 5}{1 \\times 1 \\times 2} $<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{5}{2} $<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{5}{2} $<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-14 03:09:59","option_type":"math","len":0},{"id":"2783","post_id":"6892","mon_id":"1159012","chapter_id":"1159027","question":"<p>Tính b\u1eb1ng cách thu\u1eadn ti\u1ec7n.<\/p><p><span class=\"math-tex\">$\\dfrac{1}{15}+\\dfrac{7}{16}+\\dfrac{14}{15}$<\/span><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{22}{15}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{16}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{23}{16}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{23}{15}$<\/span>"],"correct":"3","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{1}{15}+\\dfrac{7}{16}+\\dfrac{14}{15}$<\/span><\/p><p>= <span class=\"math-tex\">$\\bigg(\\dfrac{1}{15}+\\dfrac{14}{15}\\bigg)+\\dfrac{7}{16}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{15}{15}+\\dfrac{7}{16}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{1}{1}+\\dfrac{7}{16}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{16}{16}+\\dfrac{7}{16}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{23}{16}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{23}{16}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-14 03:13:11","option_type":"math","len":0}]}