{"common":{"save":0,"post_id":"7636","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1333","post_id":"7636","mon_id":"1159414","chapter_id":"1159426","question":"<p>\u0110i\u1ec1n s\u1ed1 thích h\u1ee3p vào ch\u1ed7 ch\u1ea5m:<\/p><p>7,02 t\u1ea5n = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> kg<\/p><p>0,35 t\u1ea1 = <input class=\"tim_x input_number\" tpl=\"dien_so\" type=\"text\"\/> kg<\/p>","options":"","correct":["[\"7020\",\"35\"]"],"level":"3","hint":"<p>1 t\u1ea5n = 1000 kg nên 1 kg = <span class=\"math-tex\">$\\dfrac{1}{1000}$<\/span> t\u1ea5n<\/p><p>1 t\u1ea1 = 100 kg nên 1 kg = <span class=\"math-tex\">$\\dfrac{1}{100}$<\/span> t\u1ea1<\/p>","answer":"<p>7,02 t\u1ea5n = <span class=\"math-tex\">$\\dfrac{702}{100}$<\/span> t\u1ea5n = <span class=\"math-tex\">$\\dfrac{7020}{1000}$<\/span> t\u1ea5n = <span style=\"color:#16a085;\"><strong>7020<\/strong><\/span> kg<\/p><p>0,35 t\u1ea1 = <span class=\"math-tex\">$\\dfrac{35}{100}$<\/span> t\u1ea1 = <span style=\"color:#16a085;\"><strong>35<\/strong><\/span> kg<\/p><p>V\u1eady các s\u1ed1 c\u1ea7n \u0111i\u1ec1n l\u1ea7n l\u01b0\u1ee3t là <span style=\"color:#16a085;\"><strong>7020<\/strong><\/span> ; <span style=\"color:#16a085;\"><strong>35<\/strong><\/span>.<span style=\"color:#16a085;\"><\/span><\/p>","type":"blank","extra_type":"","time":"0","user_id":"131","test":"0","date":"2024-09-12 03:12:25"},{"id":"1335","post_id":"7636","mon_id":"1159414","chapter_id":"1159426","question":"<p>\u0110i\u1ec1n s\u1ed1 thích h\u1ee3p vào ch\u1ed7 ch\u1ea5m: 2 gi\u1edd 45 phút = … gi\u1edd<\/p>","options":["<strong>A.<\/strong> 2,75 gi\u1edd","<strong>B.<\/strong> 2,5 gi\u1edd","<strong>C.<\/strong> 2,45 gi\u1edd","<strong>D.<\/strong> 2,15 gi\u1edd"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 2,75 gi\u1edd<\/span><\/p><p>\u0110\u1ed5i: 45 phút = <span class=\"math-tex\">$\\dfrac{45}{60}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{3}{4}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{75}{100}$<\/span> gi\u1edd<\/p><p>2 gi\u1edd 45 phút = 2 gi\u1edd + 45 phút = 2 gi\u1edd + <span class=\"math-tex\">$\\dfrac{75}{100}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{275}{100}$<\/span> gi\u1edd =<span style=\"color:#16a085;\"><strong> 2,75<\/strong><\/span> gi\u1edd<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-12 03:15:48","option_type":"txt","len":1},{"id":"1338","post_id":"7636","mon_id":"1159414","chapter_id":"1159426","question":"<p>\u0110i\u1ec1n s\u1ed1 thích h\u1ee3p vào ch\u1ed7 ch\u1ea5m: 3 gi\u1edd 54 giây = … gi\u1edd<\/p><p><meta charset=\"utf-8\" \/><\/p><p dir=\"ltr\"><meta charset=\"utf-8\" \/><\/p>","options":["<strong>A.<\/strong> 3,015 gi\u1edd","<strong>B.<\/strong> 3,15 gi\u1edd","<strong>C.<\/strong> 30,15 gi\u1edd","<strong>D.<\/strong> 3,051 gi\u1edd"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 3,015 gi\u1edd<\/span><\/p><p>1 gi\u1edd = 60 phút = 60 x 60 giây = 3600 giây nên 1 giây= <span class=\"math-tex\">$\\dfrac{1}{3600}$<\/span> gi\u1edd<\/p><p>Do \u0111ó 54 giây = <span class=\"math-tex\">$\\dfrac{54}{3600}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{3}{200}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{15}{1000}$<\/span> gi\u1edd<\/p><p>V\u1eady 3 gi\u1edd 54 giây = 3 gi\u1edd + <span class=\"math-tex\">$\\dfrac{15}{1000}$<\/span> gi\u1edd = <span class=\"math-tex\">$\\dfrac{3015}{1000}$<\/span> gi\u1edd = <span style=\"color:#16a085;\"><strong>3,015 <\/strong><\/span>gi\u1edd<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-13 01:26:49","option_type":"txt","len":1}]}