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分数应用题在教学中是一个难点,突破的关键是求一个数是另一个数的“几分之几”。关于“几分之几”的含意为了说得清楚,还得从分数的定义入手。形如 m/n(n 为大于1的自然数,m 为自然数)的数叫做分数的分子,n 叫做分数的分母,中间的横线叫做分数线。m/n 读作“n 分之 m”。(见中师课本《小学数学基础理论和教法》)其具体含义如下
The application of the scores in teaching is a difficult point, the key is to find a number is another number of “a few.” On the meaning of “a few” For the sake of clarity, but also from the definition of scores to start. The numerator of a fraction such as m / n (where n is a natural number greater than 1 and m is a natural number) is called the numerator of the fraction, n is the denominator of the fraction, and the middle horizontal line is called the fraction line. m / n is read as “m of n points.” (See the textbook “primary school mathematics theory and teaching method”) The specific meaning is as follows