Chú ý: Để đảm bảo quyền lợi và bảo vệ tài khoản của mình
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{"common":{"save":0,"post_id":"4438","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"5849","post_id":"4438","mon_id":"1158113","chapter_id":"1158119","question":"<p>Quy \u0111\u1ed3ng m\u1eabu các phân s\u1ed1 sau:<\/p><p> <span class=\"math-tex\">$\\dfrac{11}{2^2.5}; \\dfrac{-7}{2^2.5^2}; \\dfrac{-23}{2.5^2}$<\/span><\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hinh-cat-gap\/cathoa.png\" \/><\/div>","options":["<strong>A<\/strong>. <span class=\"math-tex\">$\\dfrac{11}{100}; \\dfrac{-7}{100}; \\dfrac{-23}{100}$<\/span>","<strong>B<\/strong>. <span class=\"math-tex\">$\\dfrac{55}{100}; \\dfrac{-7}{100}; \\dfrac{-46}{100}$<\/span>","<strong>C<\/strong>. <span class=\"math-tex\">$\\dfrac{22}{100}; \\dfrac{-14}{100}; \\dfrac{-46}{100}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{55}{10}; \\dfrac{-7}{10}; \\dfrac{-46}{10}$<\/span>"],"correct":"2","level":"2","hint":"<p>Tìm m\u1eabu chung và th\u1eeba s\u1ed1 ph\u1ee5 c\u1ee7a m\u1ed7i phân s\u1ed1.<\/p>","answer":"<p>M\u1eabu chung là <span class=\"math-tex\">$2^2.5^2= 4.25=100 $<\/span><\/p><p>Xét t\u1eebng phân s\u1ed1:<\/p><p><span class=\"math-tex\">$\\dfrac{11}{2^2.5} = \\dfrac{11.5}{2^2.5^2}=$<\/span> <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{55}{100} $<\/span><\/span><\/p><p><span class=\"math-tex\">$\\dfrac{-7}{2^2.5^2}=$<\/span> <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{-7}{100}$<\/span><\/span><\/p><p><span class=\"math-tex\">$\\dfrac{-23}{2.5^2}=\\dfrac{-23.2}{2^2.5^2}=$<\/span> <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{-46}{100}$<\/span><\/span><\/p><p>V\u1eady \u0111áp án \u0111úng là <span style=\"color:#16a085;\"><strong>B<\/strong>. <span class=\"math-tex\">$\\dfrac{55}{100}; \\dfrac{-7}{100}; \\dfrac{-46}{100}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-08-16 13:30:52","option_type":"math","len":0},{"id":"5858","post_id":"4438","mon_id":"1158113","chapter_id":"1158119","question":"<p>M\u1eb9 có 17 qu\u1ea3 lê. M\u1eb9 mu\u1ed1n chia \u0111\u1ec1u s\u1ed1 lê \u0111ó cho 3 anh em. H\u1ecfi m\u1ed7i anh em \u0111\u01b0\u1ee3c m\u1ea5y qu\u1ea3 lê và \u0111\u01b0\u1ee3c m\u1ea5y ph\u1ea7n c\u1ee7a qu\u1ea3 lê ?<\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hoa-qua\/qua-le.png\" \/><\/div><p><span style=\"color:#2980b9;\">M\u1ed7i anh em \u0111\u01b0\u1ee3c <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> qu\u1ea3 lê và \u0111\u01b0\u1ee3c <span class=\"frac123\"><span class=\"ts\"><input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/><\/span><span class=\"ms\"><input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/><\/span><\/span> qu\u1ea3 lê.<\/span><span class=\"frac123\"><span class=\"ms\"><\/span><\/span><\/p>","options":"","correct":["[\"5\",\"2\",\"3\"]"],"level":"2","hint":"<p>Ta l\u1ea5y 17 chia 3 và \u0111\u1ed5i phân s\u1ed1 \u0111ó sang h\u1ed7n s\u1ed1.<\/p>","answer":"<p>M\u1eb9 chia 17 qu\u1ea3 cho 3 anh em, m\u1ed7i anh em s\u1ebd \u0111\u01b0\u1ee3c <span class=\"math-tex\">$\\dfrac{17}{3}$<\/span> là m\u1ed9t s\u1ed1 lê.<\/p><p>Vì <span class=\"math-tex\">$\\dfrac{17}{3}=5\\dfrac{2}{3}$<\/span> nên m\u1ed7i anh em s\u1ebd \u0111\u01b0\u1ee3c <span style=\"color:#16a085;\">5<\/span> qu\u1ea3 lê và <span style=\"color:#16a085;\"><span class=\"math-tex\">$\\dfrac{2}{3}$<\/span><\/span> qu\u1ea3 lê.<\/p><p>V\u1eady các s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t là <strong><span style=\"color:#16a085;\">5, 2, 3<\/span><\/strong>.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-08-16 14:55:54"},{"id":"5860","post_id":"4438","mon_id":"1158113","chapter_id":"1158119","question":"<p>Không quy \u0111\u1ed3ng m\u1eabu s\u1ed1, hãy so sánh hai phân s\u1ed1 sau b\u1eb1ng cách \u0111i\u1ec1n d\u1ea5u thích h\u1ee3p (>; <; =)<\/p><p><span class=\"math-tex\">$\\dfrac{19999}{677}$<\/span> <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> <span class=\"math-tex\">$\\dfrac{55777}{56777}$<\/span><\/p><div class=\"lt123_imgs\"><img class=\"img_dd small\" src=\"\/data\/library\/hoa-qua\/rocam.png\" \/><\/div>","options":"","correct":["[\">\"]"],"level":"2","hint":"<p>So sánh hai phân s\u1ed1 trên v\u1edbi 1.<\/p>","answer":"<p>So sánh hai phân s\u1ed1 v\u1edbi 1, ta có<\/p><p> <span class=\"math-tex\">$\\dfrac{19999}{677}$<\/span> > 1 (vì 19999 > 677)<br \/><span class=\"math-tex\">$\\dfrac{55777}{56777}$<\/span> < 1 ( vì 55777 < 56777)<\/p><p>nên<span style=\"color:#16a085;\"> <span class=\"math-tex\">$\\dfrac{19999}{677}$<\/span> > <span class=\"math-tex\">$\\dfrac{55777}{56777}$<\/span><\/span><\/p><p>V\u1eady d\u1ea5u c\u1ea7n \u0111i\u1ec1n vào ô tr\u1ed1ng là <strong><span style=\"color:#16a085;\">> <\/span><\/strong><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-08-16 15:20:15"}]}