{"common":{"save":0,"post_id":"7630","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1277","post_id":"7630","mon_id":"1159414","chapter_id":"1159417","question":"<p>Hai ng\u01b0\u1eddi công nhân cùng làm vi\u1ec7c trong m\u1ed9t x\u01b0\u1edfng may. Ng\u01b0\u1eddi th\u1ee3 th\u1ee9 nh\u1ea5t may 5 chi\u1ebfc áo m\u1ea5t 90 phút, c\u0169ng may 5 chi\u1ebfc áo t\u01b0\u01a1ng t\u1ef1 ng\u01b0\u1eddi th\u1ee3 th\u1ee9 hai may nhanh h\u01a1n ng\u01b0\u1eddi th\u1ee3 th\u1ee9 nh\u1ea5t <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> gi\u1edd. V\u1eady \u0111\u1ec3 may xong m\u1ed9t chi\u1ebfc áo ng\u01b0\u1eddi th\u1ee3 th\u1ee9 hai c\u1ea7n may trong bao nhiêu gi\u1edd?<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{7}{20}$<\/span> gi\u1edd","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{3}$<\/span> gi\u1edd","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> gi\u1edd","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{5}$<\/span> gi\u1edd"],"correct":"3","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> gi\u1edd<\/span><\/p><p>\u0110\u1ed5i: <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> gi\u1edd = 15 phút<\/p><p>Ng\u01b0\u1eddi th\u1ee3 th\u1ee9 hai may 5 chi\u1ebfc áo trong s\u1ed1 phút là:<\/p><p>90 – 15 = 75 (phút)<\/p><p>\u0110\u1ec3 may xong m\u1ed9t chi\u1ebfc áo ng\u01b0\u1eddi th\u1ee3 th\u1ee9 hai may trong:<\/p><p>75 : 5 = 15 (phút)<\/p><p>\u0110\u1ed5i: 15 phút = <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span> gi\u1edd<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-11 01:59:35","option_type":"math","len":0},{"id":"1278","post_id":"7630","mon_id":"1159414","chapter_id":"1159417","question":"<p>7 t\u1ea5n 2 t\u1ea1 = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> t\u1ea1<\/p>","options":"","correct":["[\"72\"]"],"level":"3","hint":"","answer":"<p>\u0110\u1ed5i: 7 t\u1ea5n 2 t\u1ea1 = 7 t\u1ea5n + 2 t\u1ea1 = 70 t\u1ea1 + 2 t\u1ea1 = 72 t\u1ea1<\/p><p>V\u1eady s\u1ed1 c\u1ea7n \u0111i\u1ec1n là <span style=\"color:#16a085;\"><strong>72<\/strong><\/span>.<\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-11 02:00:44"},{"id":"1280","post_id":"7630","mon_id":"1159414","chapter_id":"1159417","question":"<p>B\u1ed1n chi\u1ebfc xe t\u1ea3i l\u1ea7n l\u01b0\u1ee3t kh\u1ed1i l\u01b0\u1ee3ng thóc là <span style=\"color:#8e44ad;\">5 t\u1ea5n; 55 t\u1ea1; 650 y\u1ebfn; 3000 kg<\/span>. V\u1eady xe ch\u1edf \u0111\u01b0\u1ee3c ít thóc nh\u1ea5t là<\/p>","options":["<strong>A.<\/strong> xe ch\u1edf kh\u1ed1i l\u01b0\u1ee3ng 5 t\u1ea5n","<strong>B.<\/strong> xe ch\u1edf kh\u1ed1i l\u01b0\u1ee3ng 3000 kg","<strong>C.<\/strong> xe ch\u1edf kh\u1ed1i l\u01b0\u1ee3ng 55 t\u1ea1","<strong>D.<\/strong> xe ch\u1edf kh\u1ed1i l\u01b0\u1ee3ng 650 y\u1ebfn"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> xe ch\u1edf kh\u1ed1i l\u01b0\u1ee3ng 3000 kg<\/span><\/p><p>\u0110\u1ed5i: 5 t\u1ea5n = 5000 kg<\/p><p> 55 t\u1ea1 = 5500 kg<\/p><p> 650 y\u1ebfn = 6500 kg<\/p><p>Mà 3000 kg < 5000 kg < 5000 kg < 6500 kg<\/p><p>V\u1eady xe ch\u1edf \u0111\u01b0\u1ee3c ít thóc nh\u1ea5t là xe ch\u1edf kh\u1ed1i l\u01b0\u1ee3ng 3000 kg.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-11 02:03:23","option_type":"txt","len":2}]}
