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gre数学备考常用表达公式

2012-6-10 10:24| 发布者: bjangel| 查看: 115| 评论: 0

摘要: gre数学备考常用表达公式  1.is equal to; is the same as =  the result is; yields; gives  2.the sum of x and y; the total of x and y;  x added to y; x increased by y;          x+y  x ...
gre数学备考常用表达公式

  1.is equal to; is the same as =
  the result is; yields; gives
  2.the sum of x and y; the total of x and y;
  x added to y; x increased by y;          x+y
  x more then y; x greater than y
  3.x minus y; x less y;
  the difference of x and y; x take away y;
  from x subtract y' x decreased by y;         x-y
  x diminished by y; y is subtracted from x;
  y less than x (note the reversal)
  4. x multiplied by y;
  the product of x and y; xy
  5. divided by y;
  the quotient of x and y;                x y,
  y divided into x (note the reversal)
  6. A and B are factors of C;
  A and B are divisors of C;
  C is divisible by A and by B;            A B=C
  C is a multiple of A and of B;
  A divides C and B divides C;
  7. the ratio of a to b                   a:b,
  8. reciprocal of                      x
  9. x times as many z as y;                z=x y
  10. a squared;
  a to the second power                 a2
  11. a cubed;                         a3
  a to the third power
  12. between a and b                   (a,b)
  between a and b, inclusive             [a,b]
  13. off                     低于,从……中扣除
  14. account for                     占
  15. third
  16. of x (a fraction of x);              x,0.75x
  75% of x (a percent of x)

 

gre数学备考常用表达公式的延伸阅读——GRE数学部分答题技巧

 

(1)GRE考试之大小比较题 (Quantitative Comparison)

a)解答之前,两个Column都要先认真看一看;

b)注意出题的目的在于强调速度和捷径,因此不要陷于冗长的演算过程;

c)尽可能地简化问题,必要时画出草图或做上记号;

d)当问题中没有出现变量而都是数值时,不可以选(D);

e)当问题中出现变量xyzabc时,可以由01-1的简单数值代替计算;如果代入不同的数值,有不同的大小关系则就选(D);

f)要特别注意数学比较大小的最后几题。

(2)GRE考试之计量能力题 (Math Ability)

a)仔细阅读题目,把要求解的地方圈起来;

b)画出草图或在图上做记号;

c)若有简单的公式或解法,则尽量用简单的方法直接求解,再选择正确的答案;

d)若没有公式可循,则试着消去不合理的答案,即由答案做起,代入题目中验证是否正确,病且用近似值求法来简化计算过程,最终求出正确答案;

e)要特别注意最后的几题,一般设有复杂而巧妙的陷阱。

(3)GRE考试之图表分析题(Graphic Analysis)

a)先略读一下题目;

b)检视一下图表,注意标题、图例及比较显着的变化;

c)把每个题目的重点圈起来;

d)太难的或容易混淆的题目要跳过去;

e)如果计算的项目很繁杂,应先从可能的答案求近似值,排除不合理的答案;

f)在整个数学部分的试题中,图表分析的题目应该放在最后面做。

最后注意,我们建议考生在应试数学部分的试题时一定要细心认真,考试时要有充裕时间,且已经做完一遍,最好要重新一遍。再次的验算通常可以改正四道题左右。对于我国考生来说,只有在数学部分获得高分,才能弥补部分的缺陷。

       


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