-1+(+2)+(-3)+(+4)+…+(-99)+100 计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 10:44:29
![-1+(+2)+(-3)+(+4)+…+(-99)+100 计算](/uploads/image/z/680731-43-1.jpg?t=-1%2B%EF%BC%88%2B2%EF%BC%89%2B%EF%BC%88-3%EF%BC%89%2B%EF%BC%88%2B4%EF%BC%89%2B%E2%80%A6%2B%EF%BC%88-99%EF%BC%89%2B100+%E8%AE%A1%E7%AE%97)
-1+(+2)+(-3)+(+4)+…+(-99)+100 计算
-1+(+2)+(-3)+(+4)+…+(-99)+100 计算
-1+(+2)+(-3)+(+4)+…+(-99)+100 计算
-1+(+2)+(-3)+(+4)+…+(-99)+100
=-1+2-3+4-5+6-7+...+98-99+100
=(-1+2)+(-3+4)+(-5+6)+...+(-99+100)
=1+1+1+...+1(50个1)
=50
50
50