想要提高SAT数学的分数,大家在备考中,还是要多进行数学题的练习,坚持练习,大家的分数就会有明显的提升。并且在这个过程中,我们能够更好的掌握重要的知识点。因此下面小编为大家整理了详细的内容,供大家参考!

  1. If f(x) = x2 – 3, where x is an integer, which of the following could be a value of f(x)?

  I 6

  II 0

  III -6

  A. I only

  B. I and II only

  C. II and III only

  D. I and III only

  E. I, II and III

  Correct Answer: A

  解析:

  Choice I is correct because f(x) = 6 when x=3. Choice II is incorrect because to make f(x) = 0, x2 would have to be 3. But 3 is not the square of an integer. Choice III is incorrect because to make f(x) = 0, x2 would have to be –3 but squares cannot be negative. (The minimum value for x2 is zero; hence, the minimum value for f(x) = -3)

  2. For how many integer values of n will the value of the expression 4n + 7 be an integer greater than 1 and less than 200?

  A. 48

  B. 49

  C. 50

  D. 51

  E. 52

  Correct Answer: C

  解析:

  1 < 4n + 7 < 200. n can be 0, or -1. n cannot be -2 or any other negative integer or the expression 4n + 7 will be less than1. The largest value for n will be an integer < (200 - 7) /4. 193/4 = 48.25, hence 48. The number of integers between -1 and 48 inclusive is 50

  3. In the following correctly worked addition sum, A,B,C and D represent different digits, and all the digits in the sum are different. What is the sum of A,B,C and D?

  A. 23

  B. 22

  C. 18

  D. 16

  E. 14

  Correct Answer: B

  解析:

  First you must realize that the sum of two 2-digit numbers cannot be more that 198 (99 + 99). Therefore in the given problem D must be 1. Now use trial and error to satisfy the sum 5A + BC = 143. A + C must give 3 in the units place, but neither can be 1 since all the digits have to be different. Therefore A + C = 13. With one to carry over into the tens column, 1 + 5 + B = 14, and B = 8. A + C + B + D = 13 + 8 + 1 = 22

  4. 12 litres of water a poured into an aquarium of dimensions 50cm length , 30cm breadth, and 40 cm height. How high (in cm) will the water rise?

  (1 litre = 1000cm3)

  A. 6

  B. 8

  C. 10

  D. 20

  E. 40

  Correct Answer: B

  解析:

  Total volume of water = 12 liters = 12 x 1000 cm3. The base of the aquarium is 50 x 30 = 1500cm3. Base of tank x height of water = volume of water. 1500 x height = 12000; height = 12000 / 1500 = 8

  5. Six years ago Anita was P times as old as Ben was. If Anita is now 17 years old, how old is Ben now in terms of P ?

  A. 11/P + 6

  B. P/11 +6

  C. 17 - P/6

  D. 17/P

  E. 11.5P

  Correct Answer: A

  解析:

  Let Ben’s age now be B. Anita’s age now is A. (A - 6) = P(B - 6)

  But A is 17 and therefore 11 = P(B - 6). 11/P = B-6

  (11/P) + 6 = B

  以上就是关于“SAT数学题练习附答案解析”的内容,希望通过本篇文章的学习,对大家的考试有更好的帮助,也希望大家能够在考试中取得优异的成绩,早日实现留学梦想!更多精彩内容,敬请关注本频道的更新!

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