新gre数学难度系数大有增加,这让很多同学倍感压力,因此我们需要一种方法将复杂的问题转化为简单易懂的代数式,这不仅需要考生的新gre数学专业词汇要弄明白,还需要会界定范围法:
界定范围法
这种办法能大大地减少你的计算量,节约时间的同时也能起到检查答案的作用。这里,你通过确定答案的范围从而迅速地找到答案。
看下面这个例子:
If 0.303z = 2,727, then z =
a)9,000
b)900
c)90
d)9
e)0.9
解答:
答案是。这5个选项的数值相差很大,你可以考虑使用界定范围法。0.303 约等于1/3. 1/3 z = 2,727, 则z的值应该是在9,000左右。很明显,只有选项A可能是正确答案,果断地选择A.
策略: 界定范围法也是一种很有用的检查工具。当你用一种甚至很奇妙的方法得出答案时,别得意忘形,一定再检查一遍,而界定范围法是你可选择的为数不多的好办法之一。
新gre数学越来越难,小编提醒广大考生,从态度上不能轻视新gre数学。
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