{"common":{"save":0,"post_id":"7672","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1655","post_id":"7672","mon_id":"1159414","chapter_id":"1159449","question":"<p>Cho hình ch\u1eef nh\u1eadt ABCD có chi\u1ec1u dài là 21,3 m, chi\u1ec1u r\u1ed9ng ng\u1eafn h\u01a1n chi\u1ec1u dài 4,23 m. Hình ch\u1eef nh\u1eadt có n\u1eeda chu vi b\u1eb1ng:<\/p>","options":["<strong>A.<\/strong> 38,3 m","<strong>B.<\/strong> 38,03 m","<strong>C.<\/strong> 38,1 m","<strong>D.<\/strong> 38,37 m"],"correct":"4","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> 38,37 m<\/span><\/p><p>Chi\u1ec1u r\u1ed9ng hình ch\u1eef nh\u1eadt là:<\/p><p>21,3 – 4,23 = 17,07 (m)<\/p><p>Hình ch\u1eef nh\u1eadt có n\u1eeda chu vi b\u1eb1ng:<\/p><p>21,3 + 17,07 = 38,37 (m)<\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"0","date":"2024-09-18 03:03:32","option_type":"txt","len":0},{"id":"1656","post_id":"7672","mon_id":"1159414","chapter_id":"1159449","question":"<p>M\u1ed9t c\u1eeda hàng bán g\u1ea1o nh\u1eadp 1 t\u1ea1 b\u1ed9t mì v\u1ec1 \u0111\u1ec3 bán. Trong ngày th\u1ee9 nh\u1ea5t c\u1eeda hàng bán \u0111\u01b0\u1ee3c 34,12 kg b\u1ed9t mì, ngày th\u1ee9 hai bán \u0111\u01b0\u1ee3c 28,82 kg b\u1ed9t mì, ngày th\u1ee9 ba bán \u0111\u01b0\u1ee3c ít h\u01a1n ngày th\u1ee9 hai 8,12 kg b\u1ed9t mì. H\u1ecfi sau ba ngày bán b\u1ed9t mì c\u1eeda hàng còn l\u1ea1i bao nhiêu ki-lô-gam b\u1ed9t mì?<\/p>","options":["<strong>A.<\/strong> 17,36 kg","<strong>B.<\/strong> 16,36 kg","<strong>C.<\/strong> 16,64 kg","<strong>D.<\/strong> 17,46 kg"],"correct":"2","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 16,36 kg<\/span><\/p><p>\u0110\u1ed5i: 1 t\u1ea1 = 100 kg<\/p><p>Ngày th\u1ee9 ba bán \u0111\u01b0\u1ee3c s\u1ed1 kg b\u1ed9t mì là:<\/p><p>28,82 – 8,12 = 20,7 (kg)<\/p><p>C\u1ea3 ba ngày bán \u0111\u01b0\u1ee3c s\u1ed1 kg b\u1ed9t mì là:<\/p><p>34,12 + 28,82 + 20,7 = 83,64 (kg)<\/p><p>Sau ba ngày bán b\u1ed9t mì c\u1eeda hàng còn l\u1ea1i s\u1ed1 ki-lô-gam b\u1ed9t mì là:<\/p><p>100 – 83,64 = 16,36 (kg)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-09-18 03:06:46","option_type":"txt","len":1},{"id":"1659","post_id":"7672","mon_id":"1159414","chapter_id":"1159449","question":"<p>Nông tr\u1ea1i c\u1ee7a bác Mai tr\u1ed3ng m\u1ed9t v\u01b0\u1eddn c\u1ee7 c\u1ea3i và \u0111ã \u0111\u1ebfn v\u1ee5 thu ho\u1ea1nh. Bác Mai d\u1ef1 \u0111\u1ecbnh nh\u1ed5 54,27 kg khoai. Bu\u1ed5i sáng nh\u1ed5 \u0111\u01b0\u1ee3c 28,31 kg khoai, bu\u1ed5i chi\u1ec1u nh\u1ed5 ít h\u01a1n bu\u1ed5i sáng 8,2 kg. H\u1ecfi bác Mai còn ph\u1ea3i nh\u1ed5 thêm bao nhiêu ki-lô-gam khoai n\u1eefa m\u1edbi \u0111\u1ee7 s\u1ed1 l\u01b0\u1ee3ng nh\u01b0 d\u1ef1 \u0111\u1ecbnh?<\/p>","options":["<strong>A.<\/strong> 5,85 kg","<strong>B.<\/strong> 6,85 kg","<strong>C.<\/strong> 5,75 kg","<strong>D.<\/strong> 6,75 kg"],"correct":"1","level":"3","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#27ae60;\"><\/span><span style=\"color:#16a085;\"><strong>A.<\/strong> 5,85 kg<\/span><\/p><p>Bu\u1ed5i chi\u1ec1u nh\u1ed5 \u0111\u01b0\u1ee3c s\u1ed1 kg khoai là:<\/p><p>28,31 – 8,2 = 20,11 (kg)<\/p><p>Nh\u01b0 v\u1eady, bác Mai \u0111ã nh\u1ed5 \u0111\u01b0\u1ee3c s\u1ed1 kg là:<\/p><p>28,31 + 20,11 = 48,42 (kg)<\/p><p>Bác Mai còn ph\u1ea3i nh\u1ed5 thêm s\u1ed1 ki-lô-gam khoai n\u1eefa m\u1edbi \u0111\u1ee7 s\u1ed1 l\u01b0\u1ee3ng nh\u01b0 d\u1ef1 \u0111\u1ecbnh là:<\/p><p>54,27 – 48,42 = 5,85 (kg)<\/p>","type":"choose","extra_type":"shape2","time":"0","user_id":"131","test":"0","date":"2024-09-18 03:09:33","option_type":"txt","len":0}]}