{"common":{"save":0,"post_id":"6930","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2509","post_id":"6930","mon_id":"1159012","chapter_id":"1159022","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span class=\"math-tex\">$\\dfrac{5}{18}+\\dfrac{7}{18}-\\dfrac{1}{18}$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{8}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{18}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{12}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{18}$<\/span>"],"correct":"2","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{5}{18}+\\dfrac{7}{18}-\\dfrac{1}{18}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{12}{18}-\\dfrac{1}{18}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{11}{18}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{18}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 04:29:31","option_type":"math","len":0},{"id":"2511","post_id":"6930","mon_id":"1159012","chapter_id":"1159022","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span class=\"math-tex\">$\\dfrac{17}{30}-\\dfrac{7}{30}+\\dfrac{9}{30}$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{30}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{19}{40}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{19}{30}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{30}$<\/span>"],"correct":"3","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{17}{30}-\\dfrac{7}{30}+\\dfrac{9}{30}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{10}{30}+\\dfrac{9}{30}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{19}{30}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{19}{30}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 04:32:12","option_type":"math","len":0},{"id":"2512","post_id":"6930","mon_id":"1159012","chapter_id":"1159022","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính <span class=\"math-tex\">$\\dfrac{65}{51}-\\dfrac{27}{51}-\\dfrac{19}{51}$<\/span>.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{19}{50}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{38}{51}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{20}{51}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{19}{51}$<\/span>"],"correct":"4","level":"1","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{65}{51}-\\dfrac{27}{51}-\\dfrac{19}{51}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{38}{51}-\\dfrac{19}{51}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{19}{51}$<\/span><\/p><p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{19}{51}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-07 04:37:16","option_type":"math","len":0}]}