计算（+1）+(-2)+(+3)+(-4)+······+（-100）+(+101)+(-102)_数学解答

计算（+1）+(-2)+(+3)+(-4)+······+（-100）+(+101)+(-102)

人气：240 ℃　时间：2020-04-02 06:25:00

解答

（+1）+(-2)+(+3)+(-4)+······+（-100）+(+101)+(-102)
=(1-2)+(3-4)+...+(101-102)
=(-1)+(-1)+...+(-1)
=(-1)*51
=-51