{"common":{"save":0,"post_id":"4552","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6454","post_id":"4552","mon_id":"1158113","chapter_id":"1158119","question":"<p>M\u1ed9t h\u1ed9p \u0111\u1ef1ng bút có hai lo\u1ea1i bút là bút xanh và bút \u0111en, trong \u0111ó s\u1ed1 bút xanh là 24 bút và b\u1eb1ng <span class=\"frac123\"><span class=\"ts\">3<\/span><span class=\"ms\">5<\/span><\/span> s\u1ed1 bút trong h\u1ed9p. H\u1ecfi trong h\u1ed9p có bao nhiêu t\u1ea5t c\u1ea3 bao nhiêu bút ?<\/p><p><strong>Trong h\u1ed9p có <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> bút.<\/strong><\/p>","options":"","correct":["[\"40\"]"],"level":"2","hint":"<p>Mu\u1ed1n tìm m\u1ed9t s\u1ed1 bi\u1ebft <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a nó bi\u1ebft <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a nó b\u1eb1ng <span class=\"math-tex\">$a$<\/span>, ta tính <span class=\"math-tex\">$a:\\dfrac{m}{n}$<\/span> .<\/p>","answer":"<p>S\u1ed1 bút trong h\u1ed9p là <span class=\"math-tex\">$24:\u200b\u200b\\dfrac{3}{5} = 24.\\dfrac{5}{3} = $<\/span> <strong><span style=\"color:#16a085;\">40 <\/span><\/strong> (bút)<\/p><p>S\u1ed1 c\u1ea7n \u0111i\u1ec1n là <strong><span style=\"color:#16a085;\">40 .<\/span><\/strong><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-08-25 11:24:46"},{"id":"6455","post_id":"4552","mon_id":"1158113","chapter_id":"1158119","question":"<p>So sánh (\u0111i\u1ec1n d\u1ea5u > , < ho\u1eb7c =)<\/p><p><strong> <span class=\"frac123\"><span class=\"ts\">4<\/span><span class=\"ms\">25<\/span><\/span> c\u1ee7a 100 <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> <span class=\"frac123\"><span class=\"ts\">1<\/span><span class=\"ms\">4<\/span><\/span> c\u1ee7a 64.<\/strong><\/p>","options":"","correct":["[\"=\"]"],"level":"2","hint":"<p>Mu\u1ed1n tìm <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a m\u1ed9t s\u1ed1 <span class=\"math-tex\">$a$<\/span> cho tr\u01b0\u1edbc ta tính <span class=\"math-tex\">$a.\\dfrac{m}{n}$<\/span> .<\/p>","answer":"<p><span class=\"math-tex\">$\\dfrac{4}{25}$<\/span> c\u1ee7a 100 là <span class=\"math-tex\">$\\dfrac{4}{25} .100=4.4=$<\/span><strong><span style=\"color:#16a085;\"> <\/span>16<\/strong><\/p><p><strong><span class=\"math-tex\">$\\dfrac{1}{4}$<\/span><\/strong> c\u1ee7a 64 là <span class=\"math-tex\">$\\dfrac{1}{4}.64=$<\/span> <strong>16<\/strong><\/p><p>Suy ra<strong> <\/strong><span class=\"math-tex\">$\\dfrac{4}{25}$<\/span> c\u1ee7a 100 <span style=\"color:#16a085;\"><strong>=<\/strong><\/span> <strong><span class=\"math-tex\">$\\dfrac{1}{4}$<\/span><\/strong> c\u1ee7a 64 (=16)<\/p><p>D\u1ea5u c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>= <\/strong><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"1","date":"2021-08-25 11:28:11"},{"id":"6456","post_id":"4552","mon_id":"1158113","chapter_id":"1158119","question":"<p>Trong \u0111\u1eadu \u0111en n\u1ea5u chín, kh\u1ed1i l\u01b0\u1ee3ng ch\u1ea5t \u0111\u1ea1m b\u1eb1ng <span class=\"frac123\"><span class=\"ts\">6<\/span><span class=\"ms\">25<\/span><\/span> kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eadu \u0111en. Tính kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eadu \u0111en c\u1ea7n n\u1ea5u \u0111\u1ec3 có \u0111\u01b0\u1ee3c 540 gam ch\u1ea5t \u0111\u1ea1m.<\/p>","options":["2250 gam","2520 gam","2052 gam","2025 gam"],"correct":"1","level":"2","hint":"<p>Mu\u1ed1n tìm m\u1ed9t s\u1ed1 bi\u1ebft <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a nó bi\u1ebft <span class=\"math-tex\">$\\dfrac{m}{n}$<\/span> c\u1ee7a nó b\u1eb1ng <span class=\"math-tex\">$a$<\/span>, ta tính <span class=\"math-tex\">$a:\\dfrac{m}{n}$<\/span> .<\/p>","answer":"<p>Kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1eadu \u0111en c\u1ea7n n\u1ea5u là <\/p><p><span class=\"math-tex\">$540:\\dfrac{6}{25} = 540.\\dfrac{25}{6} = 90.25$<\/span> = <strong><span style=\"color:#16a085;\">2250 (gam)<\/span><\/strong><\/p><p>\u0110áp án \u0111úng là<b> <span style=\"color:#16a085;\">2250 gam<\/span>.<\/b><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"1","date":"2021-08-25 11:34:55","option_type":"txt","len":0}]}