轻松搞定GMAT数学基本功_GMAT数学

轻松搞定GMAT数学基本功

　　GMAT数学复习，对于许多准备参加GMAT考试的考生来说，是一个艰苦的过程。虽然GMAT数学考查的内容相当于内地初中，但是将GMAT数学放在英语语境下，让很多考生很不习惯，再加上GMAT数学强调的实际应用能力，更为考生增加了难度。作为GMAT数学基本功的算术，却是内地考生所熟悉的，就让专家帮你支几招，从算术上寻找突破口。

　　一.整数：integer，whole number

　　1.因子：factor or divisor

　　If x and y are integers and x0,x is a divisor of y provided that y=xn for some integer n. In this case y is also said to be divisible by x or to be a multiple of x. For example, 7 is a divisor or factor of 28 since 28=7 4, but 8 is not a divisor of 28 since there is no integer n such that 28=8n.Divisible adj.可以被整除的　　multiple　n.倍数

　　2.商和余数：quotients and remainders

　　余数和商都可以为0

　　3.奇数和偶数：odd and even integers

　　奇数和偶数都可以是负数;零一定是偶数

　　4.质数和合数：prime numbers and composite numbers

　　A prime number is a positive integer that has exactly two different positive divisors，1 and itself. For example, 2,3,5,7,11, and 13 are prime numbers, but 15 is not, since 15 has four different positive divisors, 1, 3, 5, and 15. The number 1 is not a prime number, since it has only one positive divisor. Every integer greater than 1 is either prime or can be uniquely expressed as a product of prime factors. For example, 14= , 81= , and 484= .