Toán lớp 6 - Sách kết nối tri thức - Đề kiểm tra 15 phút - Toán lớp 6 - Tháng 1 - Số 2
{"save":1,"level":1,"time":"15","total":10,"point":5,"segment":[{"id":"2165","test_id":"374","question":"<p>Ch\u1ecdn câu <strong>\u0111úng<\/strong><\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{17}{34}=\\dfrac{1}{2}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{-19}{57}=\\dfrac{1}{3}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{12}{8}=\\dfrac{15}{11}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{-16}{12}=\\dfrac{4}{3}$<\/span>"],"correct":"1","answer":"<p><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{17}{34}=\\dfrac{1}{2}$<\/span> (<span style=\"color:#16a085;\">\u0111úng<\/span>)<\/p><p><strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{-19}{57}=\\dfrac{1}{3}$<\/span> (<span style=\"color:#c0392b;\">sai <\/span>vì phân s\u1ed1 âm không th\u1ec3 b\u1eb1ng phân s\u1ed1 d\u01b0\u01a1ng)<\/p><p><strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{12}{8}=\\dfrac{15}{11}$<\/span> (<span style=\"color:#c0392b;\">sai <\/span>vì 12 . 11 = 121 và 8 . 15 = 120 nên 12 . 11 <span class=\"math-tex\">$\\ne$<\/span> 8 . 15, do \u0111ó <span class=\"math-tex\">$\\dfrac{12}{8} \\ne \\dfrac{15}{11}$<\/span> )<\/p><p><strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{-16}{12}=\\dfrac{4}{3}$<\/span> (<span style=\"color:#c0392b;\">sai <\/span>vì phân s\u1ed1 âm không th\u1ec3 b\u1eb1ng phân s\u1ed1 d\u01b0\u01a1ng)<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{17}{34}=\\dfrac{1}{2}$<\/span><\/span><\/p>","type":"choose","user_id":"131","test":"1","date":"2021-09-26 13:01:02"},{"id":"2167","test_id":"374","question":"<p>Tìm x th\u1ecfa mãn:<\/p><p><span class=\"math-tex\">$\\dfrac{4}{5}$<\/span> - x = <span class=\"math-tex\">$\\dfrac{11}{20}$<\/span><\/p>","options":["x = <span class=\"math-tex\">$\\dfrac{-1}{4}$<\/span>","x = <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span>"],"correct":"2","answer":"<p><span class=\"math-tex\">$\\dfrac{4}{5}$<\/span> - x = <span class=\"math-tex\">$\\dfrac{11}{20}$<\/span><\/p><p> - x = <span class=\"math-tex\">$\\dfrac{11}{20}-\\dfrac{4}{5}$<\/span><\/p><p> - x = <span class=\"math-tex\">$\\dfrac{11}{20}-\\dfrac{16}{20}$<\/span><\/p><p> - x = <span class=\"math-tex\">$\\dfrac{11-16}{20}$<\/span><\/p><p> - x = <span class=\"math-tex\">$\\dfrac{-5}{20}$<\/span><\/p><p> x = <span class=\"math-tex\">$\\dfrac{5}{20}$<\/span><\/p><p> <span style=\"color:#16a085;\"> x = <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span><\/span><\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\">x = <span class=\"math-tex\">$\\dfrac{1}{4}$<\/span><\/span><\/p><p><strong>Chú ý quy t\u1eafc chuy\u1ec3n v\u1ebf: Khi chuy\u1ebfn v\u1ebf m\u1ed9t h\u1ea1ng t\u1eed t\u1eeb v\u1ebf này sang v\u1ebf kia ta ph\u1ea3i \u0111\u1ed5i d\u1ea5u c\u1ee7a h\u1ea1ng t\u1eed \u0111ó.<\/strong><\/p>","type":"choose","user_id":"131","test":"1","date":"2021-09-26 13:07:09"}]}