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gre數(shù)學(xué)基本概念及實(shí)例解析(3).

2017/08/09 07:28:43 編輯: 瀏覽次數(shù):288 移動端

  gre數(shù)學(xué)考試在新gre考試當(dāng)中增加了一些難度,但是gre考生也不要太緊張,只要把一些gre數(shù)學(xué)基本概念掌握好,解題時(shí)就一定能輕松應(yīng)對。

  數(shù)學(xué)各個(gè)數(shù)位的表達(dá)

  個(gè)位:units,ones

  個(gè)位以上的其他整數(shù)數(shù)位:基數(shù)詞+S

  例如:十位 tens

  小數(shù)位:序數(shù)詞+S

  例如:十分位 tenths

  例題:A worker numbered the pages of a book, with 1 on the first page. In numbering the page, he printed a total of 63 digits.

  A. the number of pages in the book

  B. 37

  小數(shù)decimals

  repeating decimals 循環(huán)小數(shù)

  terminating decimals 有限小數(shù)

  round to the nearest(tenths)

  四舍五入(至十分位)

  分?jǐn)?shù) fractions

  fractions=numerator(分子)/denominator(分母)

  The least common denominator 最小公分母

  集合 set

  例題.If 75 percent of a class are members of club A, 55 percent are members of club B, and 20 percent are not members of either club A or B, what percent are members of both A and B?

  A.10%

  B.20%

  C.30%

  D.50%

  E.60%

  數(shù)列sequence/progression

  等差數(shù)列:arithmetic sequence

  等比數(shù)列:geometric sequence

  等差數(shù)列前N項(xiàng)求和:

  (首項(xiàng)+末項(xiàng))x項(xiàng)數(shù)/2

  有窮數(shù)列:finite sequence

  無窮數(shù)列:infinite sequence

  平時(shí),gre考生一定要注意gre數(shù)學(xué)基本概念的加強(qiáng)理解,因?yàn)闊o論gre數(shù)學(xué)考試怎樣的題目都是從最基本的概念中演變而來的。

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