Toán lớp 7 - Sách kết nối tri thức - Đề kiểm tra 15 phút - Toán lớp 7 - Sách kết nối tri thức - Tháng 2 - Số 1

{"save":1,"level":1,"time":"15","total":10,"point":5,"segment":[{"id":"10258","test_id":"687","question":"<p>N\u1ebfu&nbsp;<span class=\"math-tex\">$\\dfrac{3}{a}=\\dfrac{4}{b}$<\/span>&nbsp;v\u1edbi <span class=\"math-tex\">$a,b\\ne0$<\/span> th&igrave;<\/p>","options":["<strong>A.<\/strong> 3b = 4a","<strong>B.<\/strong> 3a = 4b","<strong>C.<\/strong> ab = 3.4","<strong>D.<\/strong> a : 4 = b : 3"],"correct":"1","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong> 3b = 4a.<\/span><\/p><p>N\u1ebfu&nbsp;<span class=\"math-tex\">$\\dfrac{a}{b}=\\dfrac{c}{d}$<\/span>&nbsp;th&igrave;&nbsp;<span class=\"math-tex\">$ad=bc$<\/span>.<\/p><p>N\u1ebfu&nbsp;<span class=\"math-tex\">$\\dfrac{3}{a}=\\dfrac{4}{b}$<\/span>&nbsp;th&igrave;&nbsp;<span class=\"math-tex\">$3b=4a$<\/span>.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-03 19:50:31"},{"id":"10259","test_id":"687","question":"<p>T\u1ec9 l\u1ec7 th\u1ee9c n&agrave;o sau \u0111&acirc;y l&agrave; \u0111&uacute;ng?<\/p>","options":["<strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{2}{3} = \\dfrac{5}{10}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$ \\dfrac{4}{6} = \\dfrac{8}{12}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{7}{10} = \\dfrac{14}{25}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{2}{3} = \\dfrac{5}{8}$<\/span>"],"correct":"2","answer":"<p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><\/span><span style=\"color:#16a085;\"><strong>B.<\/strong> <span class=\"math-tex\">$ \\dfrac{4}{6} = \\dfrac{8}{12}$<\/span>.<\/span><\/p><p><strong>A.<\/strong> Sai v&igrave;&nbsp;<span class=\"math-tex\">$2.10\\ne3.5$<\/span>.<\/p><p><strong>B.<\/strong> <span style=\"color:#16a085;\">\u0110&uacute;ng <\/span>v&igrave;&nbsp;<span class=\"math-tex\">$4.12 = 6.8\\;(=48)$<\/span>.<\/p><p><strong>C.<\/strong> Sai v&igrave;&nbsp;<span class=\"math-tex\">$7.25\\ne14.10$<\/span>.<\/p><p><strong>D.<\/strong> Sai v&igrave;&nbsp;<span class=\"math-tex\">$2.8\\ne5.3$<\/span>.<\/p>","type":"choose","user_id":"126","test":"1","date":"2025-08-03 19:54:32"}]}