Toán lớp 6 - Sách kết nối tri thức - Đề kiểm tra 15 phút - Toán lớp 6 - Tháng 2 - Số 2

{"save":1,"level":1,"time":"15","total":10,"point":5,"segment":[{"id":"2112","test_id":"368","question":"<p>T&iacute;nh t\u1ed5ng:<\/p><p>3,275 + 4,125 - 6,4 -&nbsp;7,2<\/p>","options":["6,2","-6,2","-8,2"],"correct":"2","answer":"<p>&nbsp; &nbsp;3,275 + 4,125 - 6,4 -&nbsp;7,2&nbsp;<\/p><p>= 7,4 - 6,4 - 7,2<\/p><p>= 1 - 7,2<\/p><p>= -6,2<\/p><p>V\u1eady \u0111&aacute;p &aacute;n \u0111&uacute;ng l&agrave; <span style=\"color:#16a085;\"><strong>-6,2<\/strong><\/span>.<\/p>","type":"choose","user_id":"131","test":"1","date":"2021-09-25 15:41:13"},{"id":"2113","test_id":"368","question":"<p>T&iacute;nh:<\/p><p>- 2,5 . 127 + 2,75 . 12 + 2,5 . 3<sup>3<\/sup>&nbsp;- 2,75 . 112<\/p>","options":["-524","-525","-555"],"correct":"2","answer":"<p>&nbsp; &nbsp;-2,5 . 127 + 2,75 . 12 + 2,5 . 3<sup>3<\/sup>&nbsp;- 2,75 . 112<\/p><p>= (-2,5 . 127 + 2,5 .&nbsp;3<sup>3<\/sup>&nbsp;) + (2,75 . 12 - 2,75 . 112)<\/p><p>= 2,5 . ( -127 +&nbsp;3<sup>3<\/sup>&nbsp;) + 2,75 . (12 - 112)<\/p><p>= 2,5 . (-127 + 27) + 2,75 . (-100)<\/p><p>= 2,5 . (-100) + (-275)<\/p><p>= (-250) + (-275)<\/p><p>= -525<\/p><p>V\u1eady \u0111&aacute;p &aacute;n \u0111&uacute;ng l&agrave; <span style=\"color:#16a085;\"><strong>-525<\/strong><\/span>.<\/p>","type":"choose","user_id":"131","test":"2","date":"2021-09-25 15:44:07"}]}