{"common":{"save":0,"post_id":"7569","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1188","post_id":"7569","mon_id":"1159414","chapter_id":"1159417","question":"<p>K\u1ebft qu\u1ea3 c\u1ee7a phép tính: <span class=\"math-tex\">$\\dfrac{4}{5}+\\dfrac{9}{5}-\\dfrac{3}{5}$<\/span><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{8}{5}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{11}{5}$<\/span>","<strong>C.<\/strong> 2","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{5}$<\/span> "],"correct":"3","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> 2<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{4}{5}+\\dfrac{9}{5}-\\dfrac{3}{5}=\\dfrac{13}{5}-\\dfrac{3}{5}=\\dfrac{10}{5}=2$<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:50:44","option_type":"math","len":0},{"id":"1190","post_id":"7569","mon_id":"1159414","chapter_id":"1159417","question":"<p>Kh\u1ed1i l\u1edbp 4 có 168 h\u1ecdc sinh. Kh\u1ed1i l\u1edbp 5 có s\u1ed1 h\u1ecdc sinh b\u1eb1ng <span class=\"math-tex\">$\\dfrac{7}{8}$<\/span> s\u1ed1 h\u1ecdc sinh kh\u1ed1i l\u1edbp 4. S\u1ed1 h\u1ecdc sinh kh\u1ed1i 4 nhi\u1ec1u h\u01a1n s\u1ed1 h\u1ecdc sinh kh\u1ed1i 5 là:<\/p>","options":["<strong>A.<\/strong> 18 h\u1ecdc sinh","<strong>B.<\/strong> 19 h\u1ecdc sinh","<strong>C.<\/strong> 20 h\u1ecdc sinh","<strong>D.<\/strong> 21 h\u1ecdc sinh"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 21 h\u1ecdc sinh<\/span><\/p><p>Kh\u1ed1i l\u1edbp 5 có s\u1ed1 h\u1ecdc sinh là:<\/p><p><span class=\"math-tex\">$168\\times\\dfrac{7}{8}=147$<\/span> (h\u1ecdc sinh)<\/p><p>S\u1ed1 h\u1ecdc sinh kh\u1ed1i 4 nhi\u1ec1u h\u01a1n s\u1ed1 h\u1ecdc sinh kh\u1ed1i 5 là:<\/p><p>168 – 147 = 21 (h\u1ecdc sinh)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:52:58","option_type":"txt","len":1},{"id":"1192","post_id":"7569","mon_id":"1159414","chapter_id":"1159417","question":"<p>H\u01b0\u1edfng \u1ee9ng thi \u0111ua chào m\u1eebng ngày Nhà giáo Vi\u1ec7t Nam 20 - 11, cô giáo t\u1ed5 ch\u1ee9c thi \u0111ua hoa \u0111i\u1ec3m m\u01b0\u1eddi. Tu\u1ea7n \u0111\u1ea7u tiên, t\u1ed5 1 \u0111\u01b0\u1ee3c t\u1ed5ng s\u1ed1 52 bông hoa \u0111i\u1ec3m m\u01b0\u1eddi. S\u1ed1 \u0111i\u1ec3m m\u01b0\u1eddi c\u1ee7a t\u1ed5 2 b\u1eb1ng <span class=\"math-tex\">$\\dfrac{3}{4}$<\/span> s\u1ed1 \u0111i\u1ec3m m\u01b0\u1eddi c\u1ee7a t\u1ed5 1. S\u1ed1 \u0111i\u1ec3m m\u01b0\u1eddi c\u1ee7a t\u1ed5 2 là:<\/p>","options":["<strong>A.<\/strong> 36","<strong>B.<\/strong> 37","<strong>C.<\/strong> 38","<strong>D.<\/strong> 39"],"correct":"4","level":"2","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 39<\/span><\/p><p>S\u1ed1 \u0111i\u1ec3m m\u01b0\u1eddi c\u1ee7a t\u1ed5 2 là:<\/p><p><span class=\"math-tex\">$\\dfrac{3}{4}\\times52=39$<\/span> (bông)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-08-21 11:55:17","option_type":"txt","len":0}]}
