进入初中,我们在学习数学时引入了一种新数——负数,那么引入负数以后数学内容产生了哪些变化呢?我们以前所学的数中,0是最小的数,那么还有没有比0更小的数呢?有,这种数叫做负数.负数是与正数对立的数,正负数概念的产生是由于生活中存在相反意义的量,如某同学做对10道题与做错10道题,某小贩某 Into the junior high school, we introduced a new number in learning mathematics - negative numbers, then the introduction of negative mathematics what changes have taken place? We learned a few, 0 is the smallest number, then there is no more than 0 The smaller the number? Yes, this number is called a negative number. Negative number is the opposite of the positive number, the concept of positive and negative number is due to the existence of the opposite sense of life, such as a classmate doing 10 questions and doing wrong 10 questions, a hawker