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SAT数学练习题目两个

2011-10-10 16:19 | 查看: 91次 【投资移民在线评估】【留学免费在线评估分享到
下面为大家搜集整理的是两个SAT数学练习题目,都是关于数学运算方面的选择题。SAT数学题对一般的中国考生来说,掌握的难度集中在理解题目的出题方式和加快解题速度两个方面。下面我们就来看看这两个SAT数学练习题的解答有什么特点吧。

  SAT官方每日一题之数学---选择:

  Mathematics > Standard Multiple Choice

  Read the following SAT test question and then click on a button to select your answer.

  A gasoline tank on a certain tractor holdsSAT数学练习题目两个gallons of gasoline. If the tractor requiresSAT数学练习题目两个gallons to plowSAT数学练习题目两个acres, how many acres can the tractor plow with a tankful of gasoline?

  Answer Choices

  (A)SAT数学练习题目两个

  (B)SAT数学练习题目两个

  (C)SAT数学练习题目两个

  (D)SAT数学练习题目两个

  (E)SAT数学练习题目两个

  The correct answer is A

  Explanation

  In the question, you are told thatSAT数学练习题目两个gallons of gasoline can plowSAT数学练习题目两个acres and you are asked to find how many acres, call itSAT数学练习题目两个, can be plowed bySAT数学练习题目两个gallons. You can set up a ratio of the number of gallons of gasoline used to the number of acres plowed. Therefore, you haveSAT数学练习题目两个. Cross-multiplying and solving forSAT数学练习题目两个gives you the answer ofSAT数学练习题目两个acres, orSAT数学练习题目两个acres.

  Read the following SAT test question and then click on a button to select your answer.

  

SAT数学练习题目两个

 

  On the line above, ifSAT数学练习题目两个, which of the following must be true?

  Answer Choices

  (A)SAT数学练习题目两个

  (B)SAT数学练习题目两个

  (C)SAT数学练习题目两个

  (D)SAT数学练习题目两个

  (E)SAT数学练习题目两个

  The correct answer is B

  Explanation

  You can rewriteSAT数学练习题目两个asSAT数学练习题目两个,SAT数学练习题目两个asSAT数学练习题目两个,SAT数学练习题目两个asSAT数学练习题目两个, andSAT数学练习题目两个asSAT数学练习题目两个, and then consider the five answer choices.

  The first answer choice is equivalent toSAT数学练习题目两个is less thanSAT数学练习题目两个. You know thatSAT数学练习题目两个is less thanSAT数学练习题目两个and thatSAT数学练习题目两个is also less thanSAT数学练习题目两个, but the sum ofSAT数学练习题目两个andSAT数学练习题目两个might not be less thanSAT数学练习题目两个. Since the question asks which statement must be true, the first answer choice is not the correct answer.

  The second answer choice is equivalent toSAT数学练习题目两个is less thanSAT数学练习题目两个. This statement must be true, becauseSAT数学练习题目两个is less thanSAT数学练习题目两个andSAT数学练习题目两个is less thanSAT数学练习题目两个. Although there is no need to consider the other answer choices once you see that the second answer choice must be true, each of the remaining choices could be rewritten in the same way and you could see that they need not be true

  以上就是这两个SAT数学练习题目的全部内容,都来自SAT官方网站,后面附有详细的答案解析。大家在备考SAT数学考试的时候,可以适当的参考一下上面数学题目的解法,重点放在思路的转换上。



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