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如何拿到GMAT数学基础分?

时间:2014-08-26 17:07来源:朗阁小编作者:Judy

GMAT数学相对是比较简单的,但是也是比较容易出错的,因此南京GMAT讲师介绍,GMAT数学要想分不拖后腿,一定要证拿到基础分,只有打好基础才能有可能,千万不能忽视基础,下面我们一起来看看吧!

一.整数:integer,whole number

1.因子:factor or divisor

If x and y are integers and x≠0,x is a divisor (factor) 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= (2) (7), 81= (3) (3) (3) (3), and 484= (2) (2) (11) (11).

注:GMAT考试除了1和其本身外,还有其他因子的数叫合数。GMAT数学 小的质数为2, 小的合数为4,在讨论质数和合数时,都指正数。1和0既不是质数,也不是合数。

5.整数中的重要概念:

* Perfect square完全平方数,诸如9 = 32

* Perfect cube 完全立方数,诸如8 = 23

* the greatest common divisor  大公约数

GMAT入门几个数所公有的 大因子称 大公约数,诸如:48与36的公因子有1,2,3,4,6,12,其中12为 大公约数。

* the least common multiple 小公倍数

几个数所公有的 小倍数称 小公倍数,诸如:3,7和14的 小公倍数为42。

*连续正整数的算术平均值也是首项和末项的算术平均值。

同理,连续奇数与连续偶数的算术平均值也是首项和末项的算术平均值。

如何拿到GMAT数学基础分?相信您看了上面的介绍应该知道了,多疑问请点击在线咨询!
 

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