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新初一的同学们在刚升入中学不久学习了有理数,整数和分数统称为有理数,有理数有下面的两种分类:正整数和零是自然数.这时有的同学有疑问了,为什么分类表里没有小学学过的“小数”呢?小数到底是什么数呢?有的同学说:“小数就是分数”.小数是不是分数?小数和分数有什么关
The students of the new first class soon learned the rational numbers in the very first year of high school. The integers and fractions are collectively referred to as rational numbers. The rational numbers have the following two categories: positive integer and zero are natural numbers. At this time, some students have questions about why the classification table There is no primary school learned “decimal”? What is the decimal number in the end? Some students said: “decimal is the score.” Decimal is not a fraction?