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从分数和百分数的意义上看,它们是既有联系又有区别的两个概念。它们的联系是:分数、百分数都可表示两个数量间的倍数关系,即都可表示一个数是另一个数的几分之几或百分之几。如,20人是50人的2/5,或20人是50人的40%。它们的区别是:分数不仅可以表示两个数的倍数关系,还可表示一个实际数值,如,1/5吨、2/3小时和3/(10)米所表示的实际数值分别是200公斤、40分钟和3分米。因此,分数后面可以带上计量单位名称。然而,百分数却只能表示一个数是另一个数的百分之几,一般不表示一个实际数值,不带计量单位名称。所以,生活中一般没有20%吨、30%米等写法。正因为如此,我们通常把百分数又称之为百分比或百分率。
In terms of scores and percentages, they are two concepts that are both connected and distinct. Their connection is: Fraction, the percentage can be expressed as a multiple of the relationship between the two numbers, which can indicate a number is another number of a few or a few percent. For example, 20 people are 2/5 of 50 people, or 20 people are 40% of 50 people. The difference between them is that the score can represent not only the multiple of two numbers but also an actual value such as 1 / 5t, 2 / 3h and 3 / (10) m, where the actual values are 200kg , 40 minutes and 3 minutes. Therefore, the unit of measure can be followed by a score. However, percentages can only indicate how many percentages are in a number, and generally do not represent an actual value without a unit of measure. Therefore, life is generally not 20%, 30% m and other wording. Because of this, we often refer to the percentage as a percentage or percentage.