备考必看：SAT数学练习题三则及解析

　　SAT考试现在很受留学生们的关注，现在有很多的小伙伴都在备考SAT考试，这因为SAT考试成绩，在申请美国大部分大学时都是必须提供的，大家都知道SAT数学对于同学们来说是比较容易拿分的一项，但想拿高分，平时还是要多加练习，那么今天小编就给大家带来SAT数学练习题三则及解析。

　　真题一: Out of all of the houses characterized in the table below, what is the percentage of new ranches?

　　HousesOldNewTotal

　　Ranch23?30

　　Colonial?40?

　　Total23??

　　(a) 10%

　　(b) 12%

　　(c) 15%

　　(d) 25%

　　(e) 8%

　　解析: The number of new ranches will be 30 - 23 = 7. We need to find the total number of houses.

　　The number of old colonials will be 23 - 23 = 0, and the total number of colonials will be 40 + 0 = 40.

　　The total number of houses will be the total number of ranches + the total number of colonials, 30 + 50 = 70. We can rewrite the table: HousesOldNewTotal

　　Ranch23730

　　Colonial04040

　　Total234770

　　The percentage of new ranches will be (7 / 70)·100 = 10%

　　真题二: If one of the houses from the previous question is randomly selected, what is the probability that the selected house is a ranch?

　　(a) 1/10

　　(b) 4/7

　　(c) 3/7

　　(d) 0

　　(e) 23/70

　　解析: The number of ranches is 30 and the total number of houses is 70, so the probability is 30/70 = 3/7.

　　真题三: The side of the cube C1 is equal to the height of a cylinder C2 and twice the radius of the same cylinder C2.

　　Column AColumn B

　　Volume of the cube C1Volume of the cylinder C2

　　(a) The quantity in Column A is greater then the quantity in Column B.

　　(b) The quantity in Column B is greater then the quantity in Column A.

　　(c) The two quantities are equal.

　　(d) The relationship cannot be determined from the information given.

　　解析: The volume of the cube will be a·a·a = a3

　　The volume of the cylinder will be h·?·r2 = a·?·(a/2)2 = (?/4)·a3

　　Since (?/4) < 1, the volume of the cube will be greater than the volume of the cylinder, so tthe quantity in Column A is greater then the quantity in Column B.

　　以上就是关于SAT数学难题的内容相关分享，希望本篇文章可以帮助到你，想了解更多关于SAT数学真题及答案的内容，请多多关注本网站，也可以添加微信号kewo11。