{"common":{"save":0,"post_id":"7645","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1417","post_id":"7645","mon_id":"1159414","chapter_id":"1159426","question":"<p>S\u1ed1 nào d\u01b0\u1edbi \u0111ây khi \u0111\u01b0\u1ee3c làm tròn \u0111\u1ebfn hàng ph\u1ea7n tr\u0103m thì \u0111\u01b0\u1ee3c s\u1ed1 <strong>4,74<\/strong> ?<\/p>","options":["<strong>A.<\/strong> 4,749","<strong>B.<\/strong> 4,746","<strong>C.<\/strong> 4,747","<strong>D.<\/strong> 4,742"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 4,742.<\/span><\/p><p>4,742 có ch\u1eef s\u1ed1 \u1edf hàng ph\u1ea7n nghìn là 2 < 5 nên làm tròn xu\u1ed1ng ta \u0111\u01b0\u1ee3c 4,74.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-15 08:40:41","option_type":"txt","len":0},{"id":"1418","post_id":"7645","mon_id":"1159414","chapter_id":"1159426","question":"<p>Làm tròn k\u1ebft qu\u1ea3 c\u1ee7a phép tính <span class=\"math-tex\">$\\dfrac{2}{5}+\\dfrac{2}{5}$<\/span> \u0111\u1ebfn s\u1ed1 t\u1ef1 nhiên g\u1ea7n nh\u1ea5t \u0111\u01b0\u1ee3c<\/p>","options":["<strong>A.<\/strong> 0","<strong>B.<\/strong> 1","<strong>C.<\/strong> 2","<strong>D.<\/strong> 3"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 1.<\/span><\/p><p><span class=\"math-tex\">$\\dfrac{2}{5}+\\dfrac{2}{5}=\\dfrac{4}{5}=\\dfrac{8}{10}=0,8$<\/span>.<\/p><p>Vì ch\u1eef s\u1ed1 hàng ph\u1ea7n m\u01b0\u1eddi là 8 > 5 nên ta làm tròn lên \u0111\u01b0\u1ee3c 1.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-15 08:44:16","option_type":"txt","len":0},{"id":"1419","post_id":"7645","mon_id":"1159414","chapter_id":"1159426","question":"<p>Cô giáo tr\u1ea3 bài ki\u1ec3m tra Toán, Chi \u0111\u01b0\u1ee3c 9,75. Làm tròn \u0111\u1ebfn s\u1ed1 t\u1ef1 nhiên g\u1ea7n nh\u1ea5t, Chi \u0111\u01b0\u1ee3c:<\/p>","options":["<strong>A.<\/strong> 9","<strong>B.<\/strong> 9,7","<strong>C.<\/strong> 9,8","<strong>D.<\/strong> 10"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 10.<\/span><\/p><p>Do 9,75 có ch\u1eef s\u1ed1 hàng ph\u1ea7n m\u01b0\u1eddi là 7 > 5 nên ta làm tròn lên \u0111\u01b0\u1ee3c 10.<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-15 08:46:18","option_type":"txt","len":0}]}
