球员打球要有球感,歌手唱歌要有乐感,学习语文、英语要有语感,同样,学习数学要有数感。那么,什么是数感呢?数感是人对数与运算的一般理解,这种理解可以帮助人们用灵活的方法作出数学判断和为解决复杂的问题提 Players have a sense of ball, singer singing must have fun, learning Chinese, English have a sense of language, the same, learning mathematics to have a sense of the number. What then is sense of number? Sense of number is a general understanding of human logarithms and operations that can help people make mathematical judgments in flexible ways and solve complex problems