GMAT数学辅导：算术知识点全解析
二.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
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