{"common":{"save":0,"post_id":"5658","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6905","post_id":"5658","mon_id":"1158532","chapter_id":"1158544","question":"<p>Tính<\/p><p><span class=\"math-tex\">$1,5 - 4^2 + 5,5 : 5$<\/span><\/p>","options":["<strong>A. <\/strong> –13,4","<strong>B.<\/strong> –14,3","<strong>C.<\/strong> 13,4","<strong>D. <\/strong>14,3"],"correct":"1","level":"1","hint":"<p>V\u1edbi bi\u1ec3u th\u1ee9c ch\u1ec9 có phép c\u1ed9ng và phép tr\u1eeb ho\u1eb7c phép nhân và phép chia ta th\u1ef1c hi\u1ec7n các phép tính t\u1eeb trái sang ph\u1ea3i.<\/p><p>V\u1edbi bi\u1ec3u th\u1ee9c không có d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n theo th\u1ee9 t\u1ef1: L\u0169y th\u1eeba → Nhân, chia → C\u1ed9ng, tr\u1eeb<\/p><p>V\u1edbi bi\u1ec3u th\u1ee9c có d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n trong ngo\u1eb7c tr\u01b0\u1edbc ngoài ngo\u1eb7c sau.<\/p>","answer":"<p>Ta có:<\/p><p> <span class=\"math-tex\">$\\space \\space \\space \\space1,5 - 4^2+5,5:5\\\\=1,5-16+1,1\\\\=-14,5+1,1\\\\=-13,4$<\/span> .<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>A.<\/strong> –13,4<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"3","date":"2022-04-04 08:23:24","option_type":"txt","len":1},{"id":"6906","post_id":"5658","mon_id":"1158532","chapter_id":"1158544","question":"<p>Tính<\/p><p><span class=\"math-tex\">$1,5 . 4 - (8 + 0,5).2-3.(-2)^2$<\/span><\/p>","options":["<strong>A. <\/strong>23","<strong>B.<\/strong> -23","<strong>C.<\/strong> 24","<strong>D.<\/strong> -24"],"correct":"2","level":"1","hint":"<p>V\u1edbi bi\u1ec3u th\u1ee9c ch\u1ec9 có phép c\u1ed9ng và phép tr\u1eeb ho\u1eb7c phép nhân và phép chia ta th\u1ef1c hi\u1ec7n các phép tính t\u1eeb trái sang ph\u1ea3i.<\/p><p>V\u1edbi bi\u1ec3u th\u1ee9c không có d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n theo th\u1ee9 t\u1ef1: L\u0169y th\u1eeba → Nhân chia → C\u1ed9ng tr\u1eeb<\/p><p>V\u1edbi bi\u1ec3u th\u1ee9c có d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n trong ngo\u1eb7c tr\u01b0\u1edbc ngoài ngo\u1eb7c sau.<\/p>","answer":"<p>Ta có:<\/p><p><span class=\"math-tex\">$1,5 . 4 - (8 + 0,5).2-3.(-2)^2$<\/span><\/p><p>= <span class=\"math-tex\">$6-8,5.2-3.4$<\/span><\/p><p>= <span class=\"math-tex\">$6-17-12$<\/span> = <span class=\"math-tex\">$-11-12=-23$<\/span><\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>B.<\/strong> -23<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-04 08:27:48","option_type":"txt","len":0},{"id":"6909","post_id":"5658","mon_id":"1158532","chapter_id":"1158544","question":"<p>Tính<\/p><p><span class=\"math-tex\">$\\left( \\dfrac{3}{2}- \\dfrac{1}{4}\\right): \\dfrac{5}{3} + \\left( \\dfrac{7}{8}-\\dfrac{5}{4} \\right) : \\dfrac{4}{3}$<\/span><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{-32}{15}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{-15}{32}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{32}{15}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{15}{32}$<\/span>"],"correct":"4","level":"1","hint":"<p>V\u1edbi bi\u1ec3u th\u1ee9c ch\u1ec9 có phép c\u1ed9ng và phép tr\u1eeb ho\u1eb7c phép nhân và phép chia ta th\u1ef1c hi\u1ec7n các phép tính t\u1eeb trái sang ph\u1ea3i.<\/p><p>V\u1edbi bi\u1ec3u th\u1ee9c không có d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n theo th\u1ee9 t\u1ef1: L\u0169y th\u1eeba → Nhân chia → C\u1ed9ng tr\u1eeb<\/p><p>V\u1edbi bi\u1ec3u th\u1ee9c có d\u1ea5u ngo\u1eb7c ta th\u1ef1c hi\u1ec7n trong ngo\u1eb7c tr\u01b0\u1edbc ngoài ngo\u1eb7c sau.<\/p>","answer":"<p><span class=\"math-tex\">$\\left( \\dfrac{3}{2}- \\dfrac{1}{4}\\right): \\dfrac{5}{3} + \\left( \\dfrac{7}{8}-\\dfrac{5}{4} \\right) : \\dfrac{4}{3}$<\/span><\/p><p>= <span class=\"math-tex\">$\\left( \\dfrac{6}{4}- \\dfrac{1}{4}\\right):\\dfrac{5}{3} + \\left( \\dfrac{7}{8}-\\dfrac{10}{8} \\right) : \\dfrac{4}{3}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{5}{4}: \\dfrac{5}{3} + \\dfrac{-3}{8}: \\dfrac{4}{3}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{5}{4}. \\dfrac{3}{5} - \\dfrac{3}{8}. \\dfrac{3}{4}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{3}{4} - \\dfrac{9}{32}$<\/span><\/p><p>= <span class=\"math-tex\">$\\dfrac{24}{32} - \\dfrac{9}{32}$<\/span> <\/p><p>= <span class=\"math-tex\">$\\dfrac{15}{32}$<\/span><\/p><p>\u0110ap án \u0111úng là <strong> <\/strong><span style=\"color:#16a085;\"><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{15}{32}$<\/span><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-04 08:38:17","option_type":"math","len":0}]}