GMAT数学有很多基本概念需要理解,今天智课小编特意搜罗了GMAT数学相关的诸多概念,希望对大家备考起到一定的帮助,也祝愿大家都能取得一个不错的成绩。

  分数:fractions

  分子:numerator

  分母:denominator

  分数的加减乘除:addition,subtraction,multiplication and division of fractions

  繁分数和假分数:mixed number and improper fraction

  繁分数是指一个数由一个整数和一个分数构成。

  假分数是指分子大于分母的分数。例如:7/3

  小数:decimals

  科学计数法:scientific notation

  Sometimes decimals are expressed as the product of a number with only one digit to the left of the decimal point and a power of 10. This is called scientific notation. For example, 231 can be written as 2.31×102 and 0.0231 can be written as 2.31×10-2. When a number is expressed in scientific notation, the exponent of the 10 indicates the number of places that the decimal point is to be moved in the number that is to be multiplied by a power of 10 in order to obtain the product. The decimal point is moved to the right if the exponent is positive and to the left if the exponent is negative. For example, 20.13×103 is equal to 20,130 and 1.91×10-4 is equal to 0.000191.

  以上就是小编的一些整理,希望对大家有所帮助。

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