4道SAT数学选择题练习题.

　　下面是为大家准备的4道SAT考试数学选择题练习题。同学们在备考SAT数学的过程中，一定要加强习题的练习，熟练到能充分理解题意，争取得到满分。

　　1.

　　In the triangles above,

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　2.

　　What is the area of the triangle in the figure above?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　3.Milk costscents per half-gallon andcents per gallon. If a gallon of milk costscents less thanhalf-gallons, which of the following equations must be true?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　4.Addtoand then subtractfrom the sum. Ifis a positive integer, the result must be an integer multiple of

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　参考答案及解析：

　　1.The correct answer is C

　　Explanation

　　To evaluate the expression , it is necessary to determine the values of and. Since the sum of the measures of the angles of any triangle is degrees, and a right angle has measure degrees, the value of can be found by solving the equation . This yields . The value of can be found by solving the equation . This yields . Finally, the values for and are substituted into the expression

to obtain .

　　2.The correct answer is B

　　Explanation

　　Figures in a Coordinate Plane

　　The figure provides all the information you need to answer the question.

　　What Is the Question Asking?

　　You are asked to figure out the area of a triangle that is dined by the points in a coordinate plane.

　　What Do You Know?

　　The triangle in the figure is a right triangle with the right angle at the lower lt.

　　Because it is a right triangle, its base and height are the two sides that form the right angle.

　　The area of a triangle is.

　　The base of the triangle extends from pointto point. So it isunits long.

　　The height of the triangle extends from pointto point. So it isunits long.　　

　　3.The correct answer is D

　　Explanation

　　The cost of a gallon of milk is equal to cents less than the cost of half-gallons . This can be written algebraically as . Subtracting from both sides of the equation yields.

　　4.The correct answer is B

　　Explanation

　　The mathematical expression given in the question is, which is equivalent to. The expressioncan be factored as. For every positive integer,must be a multiple of. If, then, which is not an integer multiple of,,, or. Therore, the correct answer is.

　　以上就是关于4道SAT考试数学选择题练习题及其答案和解析，非常详细。同学们在备考阶段，一定要加强习题的练习以及题意的理解，争取SAT数学满分。

　　下面是为大家准备的4道SAT考试数学选择题练习题。同学们在备考SAT数学的过程中，一定要加强习题的练习，熟练到能充分理解题意，争取得到满分。

　　1.

　　In the triangles above,

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　2.

　　What is the area of the triangle in the figure above?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　3.Milk costscents per half-gallon andcents per gallon. If a gallon of milk costscents less thanhalf-gallons, which of the following equations must be true?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　4.Addtoand then subtractfrom the sum. Ifis a positive integer, the result must be an integer multiple of

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

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